CVE-2026-53268

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. the CNA's CVSS baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack_irc: fix possible out-of-bounds read

When parsing fails after we've matched the command string we should bail out instead of trying to match a different command.

This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

June 25, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dc
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaea
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8
generic

netfilter: conntrack_irc: fix possible out-of-bounds read - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2f

Vendor Advisories for CVE-2026-53268(3)

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
redhatkernel-0:5.14.0-687.42.1.el9_82026-08-26redhat

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)7.0.13-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 142× 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 285 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53268?
CVE-2026-53268 is a high vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack_irc: fix possible out-of-bounds read When parsing fails after we've matched the command string we should bail out instead of trying to match a different command. This helper should be deprecated, given…
When was CVE-2026-53268 disclosed?
CVE-2026-53268 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53268 actively exploited?
CVE-2026-53268 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 73.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53268?
CVE-2026-53268 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53268?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53268, 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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