CVE-2026-12969

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-23. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

June 23, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
Patch available. Sources: redhat.
redhat

2491663 – (CVE-2026-12969) CVE-2026-12969 dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation

https://bugzilla.redhat.com/show_bug.cgi?id=2491663
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12969

Vendor Advisories for CVE-2026-12969(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntudnsmasq-utils (2.90-0ubuntu0.16.04.1+esm4) @ xenial2026-09-18ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.85-1 ... 2.93-1 (31 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.89-1 ... 2.93-1 (23 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.91-1 ... 2.93-1 (12 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.91-1 ... 2.92~rc3-1 (10 versions)2.93-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 224 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Same vendor

1 shown

ubuntu:USN-8542-1

Frequently asked(5)

What is CVE-2026-12969?
CVE-2026-12969 is a medium vulnerability published on June 23, 2026. An out-of-bounds read vulnerability exists in dnsmasq's findsoa() function in src/rfc1035.c. When parsing NS section records, extractname() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone…
When was CVE-2026-12969 disclosed?
CVE-2026-12969 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12969 actively exploited?
CVE-2026-12969 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 66.0% of all scored CVEs.
What is the CVSS score of CVE-2026-12969?
CVE-2026-12969 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-12969?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12969, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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