CVE-2026-68432

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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:

vxlan: require CAP_NET_ADMIN in the device netns for changelink

A tunnel changelink() operates on at most two netns, dev_net(dev) and the sticky underlay netns vxlan->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in vxlan->net can rewrite a vxlan device whose underlay lives in vxlan->net.

vxlan_changelink() validates and applies the new configuration against vxlan->net (vxlan_config_validate(vxlan->net, ...)) and can reopen the underlay socket in that netns, so the same reasoning as the tunnel changelink series applies here.

Gate vxlan_changelink() with rtnl_dev_link_net_capable(), at the top of the op before any attribute is parsed, matching ipgre_changelink() and the rest of the "require CAP_NET_ADMIN in the device netns for changelink" series.

Found by 0sec automated security-research tooling (https://0sec.ai).

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 19, 2026

Advisory Details (5)

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

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e8ad0d311e225939a9a6c745d6cc384c7364ec87
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b3793d7dccb192ffff29894d11824db6251acdd5
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/730c7e5fea7f06e0cdf21c547222ec93234fd1d6
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f

Vendor Advisories for CVE-2026-68432(1)

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

All Vendor Advisories

(1)

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 37× in last 7d / 46× 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. 2026-08-21 07:06 UTCEG score recompute
  2. 2026-08-21 07:06 UTCVendor advisory
  3. 2026-08-21 07:06 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 18:35 UTCGHSA enrichment
  6. 2026-08-20 06:04 UTCGHSA enrichment
  7. 2026-08-19 17:33 UTCEG score recompute
  8. 2026-08-19 17:33 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 16:47 UTCEG score recompute
  11. 2026-08-19 16:47 UTCGHSA enrichment
  12. 2026-08-19 08:53 UTCGHSA enrichment
  13. 2026-08-18 20:20 UTCEG score recompute
  14. 2026-08-18 20:19 UTCGHSA enrichment
  15. 2026-08-18 13:49 UTCEPSS rescore
  16. 2026-08-18 13:49 UTCEPSS rescore
  17. 2026-08-18 07:46 UTCGHSA enrichment
  18. 2026-08-17 19:15 UTCEG score recompute
  19. 2026-08-17 19:15 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 06:31 UTCEG score recompute
  22. 2026-08-17 06:31 UTCGHSA enrichment
  23. 2026-08-17 05:35 UTCEG score recompute
  24. 2026-08-17 05:35 UTCGHSA enrichment
  25. 2026-08-17 02:51 UTCEG score recompute
Show 21 more
  1. 2026-08-17 02:51 UTCGHSA enrichment
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 14:20 UTCEG score recompute
  5. 2026-08-16 14:20 UTCGHSA enrichment
  6. 2026-08-16 01:49 UTCGHSA enrichment
  7. 2026-08-15 13:18 UTCEG score recompute
  8. 2026-08-15 13:18 UTCGHSA enrichment
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-15 00:47 UTCGHSA enrichment
  11. 2026-08-14 12:16 UTCEG score recompute
  12. 2026-08-14 12:16 UTCGHSA enrichment
  13. 2026-08-13 23:45 UTCEG score recompute
  14. 2026-08-13 23:45 UTCGHSA enrichment
  15. 2026-08-13 23:03 UTCEG score recompute▲ 8.80
  16. 2026-08-13 23:03 UTCGHSA enrichment
  17. 2026-08-13 23:03 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-12 00:19 UTCNVD update
  20. 2026-08-12 00:15 UTCEG score recompute
  21. 2026-08-12 00:15 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-68432?
CVE-2026-68432 is a high vulnerability published on August 12, 2026. In the Linux kernel, the following vulnerability has been resolved: vxlan: require CAPNETADMIN in the device netns for changelink A tunnel changelink() operates on at most two netns, dev_net(dev) and the sticky underlay netns vxlan->net. They differ once the device is created in or moved to a netns…
When was CVE-2026-68432 disclosed?
CVE-2026-68432 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68432 actively exploited?
CVE-2026-68432 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 97.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68432?
CVE-2026-68432 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-68432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68432, 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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