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: 0.1%CVSS: 4.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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(2)

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 rangeFix by version rangeDependents
dnsmasq2.89-1 ... 2.93-3 (25 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
dnsmasq2.91-1 ... 2.93-3 (15 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
dnsmasq2.91-1 ... 2.93-3 (13 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 83× 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 151 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 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 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13002?
CVE-2026-13002 has a CVSS base score of 4.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-13002?
A fix for CVE-2026-13002 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-13002 are linked in the Vendor Advisories panel on this page.

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