CVE-2025-70888

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-25. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

March 25, 2026

Last Modified

June 17, 2026

Advisory Details (3)

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

bug: Validation weaknesses concerning X.509 Key Usage · Issue #60 · ralphje/signify · GitHub

https://github.com/ralphje/signify/issues/60
github_pr Patch Available

Add keyUsage digitalSignature validation for signer certificate

Patch available: mtrojnar/osslsigncode 2.11 (PR #477 merged 2025-12-31)

https://github.com/mtrojnar/osslsigncode/pull/477
generic

bug: Validation weaknesses concerning X.509 Key Usage · Issue #475 · mtrojnar/osslsigncode · GitHub

https://github.com/mtrojnar/osslsigncode/issues/475

Vendor Advisories for CVE-2025-70888(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
osslsigncode2.1-1 ... 2.9-2 (21 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
osslsigncode2.10-1 ... 2.9-2 (12 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
osslsigncode2.10-1 ... 2.9-2 (7 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
osslsigncode2.10-1, 2.9-22.11-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 76× 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 217 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-70888?
CVE-2025-70888 is a critical vulnerability published on March 25, 2026. An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component
When was CVE-2025-70888 disclosed?
CVE-2025-70888 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-70888 actively exploited?
CVE-2025-70888 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 60.3% of all scored CVEs.
What is the CVSS score of CVE-2025-70888?
CVE-2025-70888 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-70888?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-70888, 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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