CVE-2026-10652

HIGHNVD 7.47.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.4 under NVD CVSS v3. EPSS exploit probability: 0.4% (36th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-40372 (ENISA EUVD)Source: ENISA EUVD

7.4EG
EchelonGraph verdictPlan mitigationNo release containing the referenced fix is confirmed: check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.4Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Zephyr's DNS resolver (subsys/net/lib/dns) parses resource records from DNS responses in dns_unpack_answer(), which validated only the fixed RR header (type, class, TTL, rdlength) and accepted any attacker-declared rdlength, including one extending past the end of the received datagram. The TXT and SRV consumers in dns_validate_record() (resolve.c) then read up to rdlength bytes (clamped only to a record-type maximum such as DNS_MAX_TEXT_SIZE, default 64, not to the packet) from the receive buffer via memcpy without their own bounds check, and pass the result to the application's resolve callback. A malicious or spoofed DNS server, an on-path attacker forging UDP DNS replies, or (with mDNS/LLMNR enabled) any LAN node can craft a truncated TXT or SRV response that causes an out-of-bounds read of adjacent receive-pool memory; the disclosed stale bytes (residual contents of prior DNS packets / uninitialized pool memory) are returned to the application as TXT/SRV record contents, an information leak, and may in some configurations cross the allocation boundary and fault, causing a denial of service. The read is bounded (~64 bytes for TXT, ~6 for SRV) and read-only (no write). The fix rejects any record whose declared rdata extends past dns_msg->msg_size at the single chokepoint in dns_unpack_answer(). Affected: v4.3.0 and v4.4.0.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity74% × 45%
Impact severity (EG Severity): CVSS 7.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.4): severity, escalated by confirmed exploitation. This CVE's 7.4 is its impact severity (EG Severity), not escalated.

EG Severity
7.4 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 30, 2026

Last Modified

November 4, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
Fix referenced — no release confirmed yet. Sources: github, github_commit.
GitHub advisoryMentions a patch (unverified)

Out-of-bounds read in Zephyr DNS resolver TXT/SRV record parsing (unvalidated rdlength) · Advisory · zephyrproject-rtos/zephyr · GitHub

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3jxq-xx8g-q8j2
GitHub commit

commit 58b46c81c679 (zephyrproject-rtos/zephyr)

Fix landed in zephyrproject-rtos/zephyr commit 58b46c81c679 — awaiting tagged release

https://github.com/zephyrproject-rtos/zephyr/commit/58b46c81c6796dac4dc7391f32ba006474f94dc8

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 179 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  2. 2026-11-12 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-11-11 16:37 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-11-11 05:13 UTCEchelonGraph re-scored
  5. 2026-11-10 16:41 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  9. 2026-11-06 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-11-04 05:05 UTCEchelonGraph re-scored
  13. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-11-01 20:51 UTCEchelonGraph re-scored
  16. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  18. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  23. 2026-10-25 21:30 UTCEchelonGraph re-scored
  24. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-25 14:54 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-22 22:48 UTCEchelonGraph re-scored
  4. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  6. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-10-18 05:08 UTCEchelonGraph re-scored
  10. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  11. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-10-15 22:30 UTCEchelonGraph re-scored
  13. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-12 16:39 UTCEchelonGraph re-scored
  17. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-11 20:14 UTCEchelonGraph re-scored
  19. 2026-10-11 18:26 UTCEchelonGraph re-scored
  20. 2026-10-11 15:00 UTCEchelonGraph re-scored
  21. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  26. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  27. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  28. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  29. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  30. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  31. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  32. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  33. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  34. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  35. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  36. 2026-09-23 07:21 UTCEchelonGraph re-scored
  37. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  38. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  39. 2026-09-18 06:49 UTCEchelonGraph re-scored
  40. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  41. 2026-09-14 00:48 UTCEchelonGraph re-scored
  42. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  43. 2026-09-12 15:09 UTCEchelonGraph re-scored
  44. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  45. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  46. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  47. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  48. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  49. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  50. 2026-09-06 14:36 UTCEchelonGraph re-scored
  51. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  52. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  53. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  54. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  55. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  56. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  57. 2026-08-30 18:05 UTCEchelonGraph re-scored
  58. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  59. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  60. 2026-08-27 22:41 UTCEchelonGraph re-scored
  61. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  62. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  63. 2026-08-24 23:49 UTCEchelonGraph re-scored
  64. 2026-08-24 11:41 UTCEchelonGraph re-scored
  65. 2026-08-23 08:52 UTCEchelonGraph re-scored
  66. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  67. 2026-08-22 08:22 UTCEchelonGraph re-scored
  68. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  69. 2026-08-21 05:41 UTCEchelonGraph re-scored
  70. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  71. 2026-08-20 05:32 UTCEchelonGraph re-scored
  72. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  73. 2026-08-18 23:02 UTCEchelonGraph re-scored
  74. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  75. 2026-08-18 05:03 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-10652?
CVE-2026-10652 is a high-severity vulnerability; its CVE record was published on June 30, 2026. Zephyr's DNS resolver (subsys/net/lib/dns) parses resource records from DNS responses in dns_unpack_answer(), which validated only the fixed RR header (type, class, TTL, rdlength) and accepted any attacker-declared rdlength, including one extending past the end of the received datagram. The TXT and…
When was the CVE record for CVE-2026-10652 published?
The CVE record for CVE-2026-10652 was published on June 30, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 4, 2026; the record at its source may have been updated since.
Is CVE-2026-10652 actively exploited?
CVE-2026-10652 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-10652?
CVE-2026-10652 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-10652?
A fix for CVE-2026-10652 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-10652

Explore →

Is Your Infrastructure Affected by CVE-2026-10652?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.