CVE-2026-45850

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 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:

ipvs: skip ipv6 extension headers for csum checks

Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (8)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac
generic

ipvs: skip ipv6 extension headers for csum checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625

Vendor Advisories for CVE-2026-45850(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
linuxKernel @ 5.10.259osv

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 ... 6.19~rc8-1~exp1 (113 versions)6.19.6-1

Data Freshness Timeline

(refreshed 5× in last 7d / 61× 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 186 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45850?
CVE-2026-45850 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.
When was CVE-2026-45850 disclosed?
CVE-2026-45850 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45850 actively exploited?
CVE-2026-45850 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 94.5% of all scored CVEs.
What is the CVSS score of CVE-2026-45850?
CVE-2026-45850 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45850?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45850, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45850

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