CVE-2026-13002

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2026-08-14. a secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.

CVSS v3
4.4
EG Score
4.4(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: 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
Severity44% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
Patch available. Sources: redhat.
redhat

2486360 – (CVE-2026-13002) CVE-2026-13002 dnsmasq: Infinite loop DoS in DNSSEC NSEC/NSEC3 type bitmap parsing

https://bugzilla.redhat.com/show_bug.cgi?id=2486360
redhat Patch Available

CVE-2026-13002 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-13002

Vendor Advisories for CVE-2026-13002(1)

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

Affected Packages

(3 across 3 ecosystems)
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 ... 2.93-1 (11 versions)——

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 22× in last 7d / 93× 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 112 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-13002?
CVE-2026-13002 is a medium vulnerability published on August 14, 2026. A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.
When was CVE-2026-13002 disclosed?
CVE-2026-13002 was first published in the National Vulnerability Database on August 14, 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-2026-13002 actively exploited?
CVE-2026-13002 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 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-13002?
CVE-2026-13002 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-13002?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13002, 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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