CVE-2025-26787

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2025-12-22. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: None knownExposed: 0

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

An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin CLI command used to configure Certificate access to the initial startup of the container sets a property of "allowany" to allow any user with a valid and trusted client auth certificate to connect. Admins can then set more restricted access to specific certificates. A logic error caused this admin CLI command to be run on each restart of the container instead of only the first startup as intended resetting the configuration to "allowany".

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
21(Track)
EG Risk 21/100SSVC: 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
Severity47% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

December 22, 2025

Last Modified

January 5, 2026

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 36× 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. 2026-07-26 14:53 UTCEPSS rescore
  2. 2026-07-24 14:17 UTCEPSS rescore
  3. 2026-07-23 14:17 UTCEPSS rescore
  4. 2026-07-23 02:52 UTCEG score recompute
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  1. 2026-07-06 02:22 UTCEPSS rescore
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  26. 2026-06-19 19:25 UTCEPSS rescore
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  36. 2026-06-12 23:11 UTCEPSS rescore
  37. 2026-06-11 13:59 UTCEPSS rescore
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  40. 2026-06-08 14:16 UTCEPSS rescore
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  42. 2026-06-07 15:24 UTCEPSS rescore
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  44. 2026-06-06 13:47 UTCEPSS rescore
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  46. 2026-06-05 22:46 UTCEPSS rescore
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  48. 2026-06-05 06:10 UTCEPSS rescore
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  50. 2026-06-04 13:11 UTCEPSS rescore
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  52. 2026-06-02 20:12 UTCEPSS rescore
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  54. 2026-06-01 13:51 UTCEPSS rescore
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  56. 2026-05-31 22:30 UTCEPSS rescore
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  58. 2026-05-31 00:16 UTCEPSS rescore
  59. 2026-05-31 00:16 UTCEPSS rescore
  60. 2026-05-29 17:08 UTCEG score recompute
  61. 2026-05-29 17:08 UTCGHSA enrichment
  62. 2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-26787?
CVE-2025-26787 is a medium vulnerability published on December 22, 2025. An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin CLI command used to configure Certificate access to the initial startup of the container sets a property of "allowany" to allow any user with a valid and trusted client auth…
When was CVE-2025-26787 disclosed?
CVE-2025-26787 was first published in the National Vulnerability Database on December 22, 2025, with the most recent update on January 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-26787 actively exploited?
CVE-2025-26787 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 96.6% of all scored CVEs.
What is the CVSS score of CVE-2025-26787?
CVE-2025-26787 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2025-26787?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-26787, 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.

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