CVE-2026-53268

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

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(high)
EPSS
28.4%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 30, 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(2)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 62× 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.

  1. 2026-07-07 00:04 UTCEG score recompute
  2. 2026-07-07 00:04 UTCVendor advisory
  3. 2026-07-07 00:04 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 12:45 UTCEG score recompute
  7. 2026-07-06 12:45 UTCVendor advisory
  8. 2026-07-06 12:45 UTCGHSA enrichment
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-06 02:23 UTCEPSS rescore
  11. 2026-07-06 01:26 UTCEG score recompute
  12. 2026-07-06 01:26 UTCVendor advisory
  13. 2026-07-06 01:26 UTCGHSA enrichment
  14. 2026-07-05 14:08 UTCEG score recompute
  15. 2026-07-05 14:08 UTCVendor advisory
  16. 2026-07-05 14:07 UTCGHSA enrichment
  17. 2026-07-05 02:45 UTCEG score recompute
  18. 2026-07-05 02:45 UTCVendor advisory
  19. 2026-07-05 02:45 UTCGHSA enrichment
  20. 2026-07-05 02:31 UTCEPSS rescore
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 15:26 UTCEG score recompute
  23. 2026-07-04 15:26 UTCVendor advisory
  24. 2026-07-04 15:26 UTCGHSA enrichment
  25. 2026-07-04 06:31 UTCEPSS rescore
Show 37 more
  1. 2026-07-04 06:31 UTCEPSS rescore
  2. 2026-07-04 04:08 UTCEG score recompute
  3. 2026-07-04 04:08 UTCVendor advisory
  4. 2026-07-04 04:08 UTCGHSA enrichment
  5. 2026-07-03 16:16 UTCEG score recompute
  6. 2026-07-03 16:16 UTCVendor advisory
  7. 2026-07-03 16:16 UTCGHSA enrichment
  8. 2026-07-03 04:58 UTCEG score recompute
  9. 2026-07-03 04:58 UTCVendor advisory
  10. 2026-07-03 04:58 UTCGHSA enrichment
  11. 2026-07-02 17:40 UTCEG score recompute
  12. 2026-07-02 17:40 UTCVendor advisory
  13. 2026-07-02 17:40 UTCGHSA enrichment
  14. 2026-07-02 06:16 UTCEG score recompute
  15. 2026-07-02 06:16 UTCVendor advisory
  16. 2026-07-02 06:16 UTCGHSA enrichment
  17. 2026-07-01 18:58 UTCEG score recompute
  18. 2026-07-01 18:58 UTCVendor advisory
  19. 2026-07-01 18:58 UTCGHSA enrichment
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-07-01 07:40 UTCEG score recompute
  22. 2026-07-01 07:40 UTCVendor advisory
  23. 2026-07-01 07:40 UTCGHSA enrichment
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-30 20:21 UTCEG score recompute▲ 8.20
  26. 2026-06-30 20:21 UTCVendor advisory
  27. 2026-06-30 20:21 UTCGHSA enrichment
  28. 2026-06-28 14:07 UTCEPSS rescore
  29. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 8.2 · severity → HIGH
  30. 2026-06-28 04:56 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 03:13 UTCEG score recompute
  33. 2026-06-28 03:13 UTCGHSA enrichment
  34. 2026-06-27 03:08 UTCEPSS rescore
  35. 2026-06-25 13:49 UTCEPSS rescore
  36. 2026-06-25 10:04 UTCEG score recompute
  37. 2026-06-25 10:03 UTCGHSA enrichment

Related CVEs(same vendor)

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 June 30, 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 28.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53268?
CVE-2026-53268 has a CVSS v3 base score of 8.2 (NVD).
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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