CVE-2026-12996

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory published 2026-07-30. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

August 5, 2026

References (4)

Vendor Advisories for CVE-2026-12996(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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntuopenvpn (2.6.19-0ubuntu0.24.04.3) @ noble2026-10-04ubuntu

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 5 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn—
  • 2.6.0 up to 2.7.5-r0: fixed in 2.7.5-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.5.1-3, 2.5.1-3+deb11u1, 2.5.1-3+deb11u2, 2.5.1-3+deb11u3
  • every version up to 2.5.1-3+deb11u4: fixed in 2.5.1-3+deb11u4
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.11-1 ... 2.6.9-1 (15 versions)
  • every version up to 2.6.14-0+deb12u2: fixed in 2.6.14-0+deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.14-1, 2.6.14-1+deb13u1, 2.6.14-1+deb13u2
  • every version up to 2.6.14-1+deb13u3: fixed in 2.6.14-1+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.14-1 ... 2.7.5-1~bpo13+1 (24 versions)
  • every version up to 2.7.5-1: fixed in 2.7.5-1
—

Weakness Classification(2)

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

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 20× in last 7d / 112× 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 302 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-12996?
CVE-2026-12996 is a high vulnerability published on July 30, 2026. A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry
When was CVE-2026-12996 disclosed?
CVE-2026-12996 was first published on July 30, 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-2026-12996 actively exploited?
CVE-2026-12996 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12996?
CVE-2026-12996 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-12996?
A fix for CVE-2026-12996 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12996 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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