CVE-2026-11999

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

X.509 trust-chain bypass (path-depth exhaustion) in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra whose application calls X509_verify_cert() with caller-supplied untrusted intermediates; for those users it is critical, otherwise the library is unaffected. Native wolfSSL TLS/DTLS usage is not impacted. X509_verify_cert() returned success based only on the last verified link rather than on reaching a trust anchor: when the supplied chain is deeper than the verifier's maximum path depth (default 100), path building runs out of depth while still walking untrusted intermediates and the chain is accepted even though it never reaches a configured trust anchor, allowing acceptance of an attacker-controlled certificate. The default TLS handshake (WOLFSSL_VERIFY_PEER) is not affected; only applications doing manual or deferred verification through this API are.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Patch available. Sources: github_pr.
generic Patch Available

wolfSSL Security Vulnerabilities | Documentation - wolfSSL

https://www.wolfssl.com/docs/security-vulnerabilities/
github_pr

Fixes for OpenSSL compatibility layer

Fix merged in wolfSSL/wolfssl PR #10674 on 2026-06-12 — awaiting tagged release

https://github.com/wolfSSL/wolfssl/pull/10674

Vendor Advisories for CVE-2026-11999(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wolfssl4.6.0+p1-0+deb11u1 ... 5.9.2-1 (40 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wolfssl5.5.4-2 ... 5.9.2-1 (27 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wolfssl5.7.2-0.1 ... 5.9.2-1 (14 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× 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 205 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11999?
CVE-2026-11999 is a high vulnerability published on June 25, 2026. X.509 trust-chain bypass (path-depth exhaustion) in the OpenSSL compatibility certificate verifier (wolfSSLX509verifycert()). This affects only builds with --enable-opensslextra whose application calls X509verifycert() with caller-supplied untrusted intermediates; for those users it is critical,…
When was CVE-2026-11999 disclosed?
CVE-2026-11999 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11999 actively exploited?
CVE-2026-11999 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 85.7% of all scored CVEs.
What is the CVSS score of CVE-2026-11999?
CVE-2026-11999 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-11999?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11999, 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-2026-11999

Explore →

Is Your Infrastructure Affected by CVE-2026-11999?

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

Start Free Scan →Browse All CVEs