CVE-2026-31752

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-01. 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:

bridge: br_nd_send: validate ND option lengths

br_nd_send() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload.

Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.

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
3%
KEV
Not listed

Published

May 1, 2026

Last Modified

July 14, 2026

Advisory Details (8)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
generic

bridge: br_nd_send: validate ND option lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b

Vendor Advisories for CVE-2026-31752(1)

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 @ 5.10.253—osv

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 (53 versions)5.10.257-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)6.1.170-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (122 versions)6.19.12-1—

All Vendor Advisories

(24)

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 8× in last 7d / 56× 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 203 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-04 00:59 UTCOSV refresh
  3. 2026-09-02 14:11 UTCEPSS rescore
  4. 2026-09-01 13:53 UTCEPSS rescore
  5. 2026-09-01 04:39 UTCEPSS rescore
  6. 2026-09-01 04:39 UTCEPSS rescore
  7. 2026-08-30 19:17 UTCEPSS rescore
  8. 2026-08-30 01:22 UTCEPSS rescore
  9. 2026-08-28 21:41 UTCEPSS rescore
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-26 14:46 UTCEPSS rescore
  12. 2026-08-25 13:49 UTCEPSS rescore
  13. 2026-08-24 14:17 UTCEPSS rescore
  14. 2026-08-23 00:19 UTCEPSS rescore
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-19 17:03 UTCEPSS rescore
  19. 2026-08-18 13:48 UTCEPSS rescore
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 13:43 UTCEG score recompute
  22. 2026-08-17 13:43 UTCVendor advisory
  23. 2026-08-17 13:43 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 05:17 UTCEG score recompute
Show 75 more
  1. 2026-08-16 05:17 UTCVendor advisory
  2. 2026-08-16 05:17 UTCGHSA enrichment
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 03:46 UTCEG score recompute
  6. 2026-08-14 03:46 UTCVendor advisory
  7. 2026-08-14 03:46 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-12 17:24 UTCEG score recompute
  10. 2026-08-12 17:24 UTCVendor advisory
  11. 2026-08-12 17:24 UTCGHSA enrichment
  12. 2026-08-12 13:50 UTCEPSS rescore
  13. 2026-08-11 04:35 UTCEG score recompute
  14. 2026-08-11 04:35 UTCVendor advisory
  15. 2026-08-11 04:35 UTCGHSA enrichment
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 04:05 UTCEG score recompute
  18. 2026-08-10 04:05 UTCVendor advisory
  19. 2026-08-10 04:05 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-09 03:34 UTCEG score recompute
  22. 2026-08-09 03:34 UTCVendor advisory
  23. 2026-08-09 03:34 UTCGHSA enrichment
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 03:04 UTCEG score recompute
  26. 2026-08-08 03:04 UTCVendor advisory
  27. 2026-08-08 03:04 UTCGHSA enrichment
  28. 2026-08-07 02:33 UTCEG score recompute
  29. 2026-08-07 02:33 UTCVendor advisory
  30. 2026-08-07 02:33 UTCGHSA enrichment
  31. 2026-08-06 13:46 UTCEPSS rescore
  32. 2026-08-05 22:36 UTCEG score recompute
  33. 2026-08-05 22:35 UTCVendor advisory
  34. 2026-08-05 22:35 UTCGHSA enrichment
  35. 2026-08-05 19:17 UTCEPSS rescore
  36. 2026-08-04 15:10 UTCEPSS rescore
  37. 2026-08-04 10:38 UTCEPSS rescore
  38. 2026-08-03 20:22 UTCEG score recompute
  39. 2026-08-03 20:22 UTCVendor advisory
  40. 2026-08-03 20:22 UTCGHSA enrichment
  41. 2026-08-03 10:36 UTCEPSS rescore
  42. 2026-08-02 05:39 UTCEG score recompute
  43. 2026-08-02 05:39 UTCVendor advisory
  44. 2026-08-02 05:39 UTCGHSA enrichment
  45. 2026-08-01 04:16 UTCEPSS rescore
  46. 2026-07-30 16:28 UTCEPSS rescore
  47. 2026-07-30 01:30 UTCEPSS rescore
  48. 2026-07-28 15:36 UTCEPSS rescore
  49. 2026-07-26 14:54 UTCEPSS rescore
  50. 2026-07-26 14:54 UTCEPSS rescore
  51. 2026-07-25 14:18 UTCEPSS rescore
  52. 2026-07-25 14:17 UTCEPSS rescore
  53. 2026-07-24 14:17 UTCEPSS rescore
  54. 2026-07-23 14:18 UTCEPSS rescore
  55. 2026-07-23 14:18 UTCEPSS rescore
  56. 2026-07-23 03:08 UTCEG score recompute
  57. 2026-07-22 14:08 UTCEPSS rescore
  58. 2026-07-22 14:08 UTCEPSS rescore
  59. 2026-07-21 15:24 UTCEPSS rescore
  60. 2026-07-21 15:24 UTCEPSS rescore
  61. 2026-07-20 17:08 UTCEPSS rescore
  62. 2026-07-20 17:08 UTCEPSS rescore
  63. 2026-07-19 19:48 UTCOSV refresh
  64. 2026-07-19 14:31 UTCEPSS rescore
  65. 2026-07-19 14:31 UTCEPSS rescore
  66. 2026-07-19 02:29 UTCEPSS rescore
  67. 2026-07-18 10:04 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-16 17:03 UTCEPSS rescore
  71. 2026-07-15 16:57 UTCEPSS rescore
  72. 2026-07-15 16:57 UTCEPSS rescore
  73. 2026-07-15 02:00 UTCEPSS rescore
  74. 2026-07-15 02:00 UTCEPSS rescore
  75. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM

Frequently asked(5)

What is CVE-2026-31752?
CVE-2026-31752 is a medium vulnerability published on May 1, 2026. In the Linux kernel, the following vulnerability has been resolved: bridge: brndsend: validate ND option lengths brndsend() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option…
When was CVE-2026-31752 disclosed?
CVE-2026-31752 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31752 actively exploited?
CVE-2026-31752 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-31752?
CVE-2026-31752 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31752?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31752, 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-2026-31752

Explore →

Is Your Infrastructure Affected by CVE-2026-31752?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs