CVE-2026-25826

MEDIUMPre-NVD 4.94.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.9 from GitHub Security Advisory published 2026-09-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory

Also known asEUVD-2026-78628 (ENISA EUVD) · GHSA-q7jr-643h-vpc8 (GitHub Security Advisories)Source: ENISA EUVD

4.9EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.9Exploit: None knownExposed services: Not assessed

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

The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "An issue was discovered in Keyfactor SignServer before 7.6.0." No release containing a fix is confirmed on record.

An issue was discovered in Keyfactor SignServer before 7.6.0. The attribute ATTRIBUTESFILE in PKCS11CryptoToken can be set to a readable file but not an accepted file (i.e., recognized with attributes). In this case, an error is thrown which - together with the error - also prints the content of the file to the application server log. This gives a user that has both SignServer admin access and access to read the output of the server log (i.e., if remote syslog shipping is configured), the possibility to read the content of files accessible by the local user JBoss.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity49% × 45%
Impact severity (EG Severity): CVSS 4.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.9): severity, escalated by confirmed exploitation. This CVE's 4.9 is its impact severity (EG Severity), not escalated.

EG Severity
4.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 15, 2026

Last Modified

September 22, 2026

Advisory Details (1)

Auto-updated Sep 22, 2026
No fix on record yet.
Web page

Trust Infrastructure for AI & Machines - Keyfactor

https://keyfactor.com

Vendor Advisories for CVE-2026-25826(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 54× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-25 14:39 UTCEG score recompute
  10. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  13. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  14. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  16. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-10-18 03:52 UTCEG score recompute
  18. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-15 15:37 UTCEG score recompute
  22. 2026-10-15 15:37 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  23. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Show 70 more
  1. 2026-10-12 16:18 UTCEG score recompute
  2. 2026-10-11 20:01 UTCEG score recompute
  3. 2026-10-11 17:14 UTCEG score recompute
  4. 2026-10-11 14:45 UTCEG score recompute
  5. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  6. 2026-10-11 05:49 UTCEG score recompute
  7. 2026-10-11 05:49 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-10 02:06 UTCEG score recompute
  10. 2026-10-10 02:06 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  12. 2026-10-09 02:04 UTCEG score recompute
  13. 2026-10-09 02:04 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  14. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-10-08 02:04 UTCEG score recompute
  16. 2026-10-08 02:04 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-10-07 02:03 UTCEG score recompute
  19. 2026-10-07 02:03 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-06 01:44 UTCEG score recompute
  22. 2026-10-06 01:44 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  23. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-10-05 01:43 UTCEG score recompute
  25. 2026-10-05 01:43 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  26. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  27. 2026-10-04 01:42 UTCEG score recompute
  28. 2026-10-04 01:42 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  29. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  30. 2026-10-03 01:28 UTCEG score recompute
  31. 2026-10-03 01:28 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  32. 2026-10-02 01:20 UTCEG score recompute
  33. 2026-10-02 01:20 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  34. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  35. 2026-10-01 01:20 UTCEG score recompute
  36. 2026-10-01 01:20 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  37. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  38. 2026-09-30 01:19 UTCEG score recompute
  39. 2026-09-30 01:19 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  40. 2026-09-28 20:57 UTCEG score recompute
  41. 2026-09-28 20:57 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  42. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  43. 2026-09-27 20:56 UTCEG score recompute
  44. 2026-09-27 20:56 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  45. 2026-09-26 20:55 UTCEG score recompute
  46. 2026-09-26 20:55 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  47. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  48. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  49. 2026-09-25 20:54 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  50. 2026-09-24 20:14 UTCEG score recompute
  51. 2026-09-24 20:14 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  52. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  53. 2026-09-23 20:14 UTCEG score recompute
  54. 2026-09-23 20:14 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  55. 2026-09-22 20:13 UTCEG score recompute
  56. 2026-09-22 20:13 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8 · GitHub CVSS 4.9
  57. 2026-09-22 16:24 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8
  58. 2026-09-22 15:55 UTCEG score recomputeFirst assessed: 4.9 MEDIUM
  59. 2026-09-22 15:55 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8
  60. 2026-09-22 15:54 UTCMITRE cvelistV5CVSS v3 → 4.9 · severity → MEDIUM
  61. 2026-09-21 02:38 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8
  62. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  63. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  64. 2026-09-18 09:05 UTCEG score recompute
  65. 2026-09-18 09:05 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8
  66. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  67. 2026-09-15 15:32 UTCGHSA enrichmentGHSA-q7jr-643h-vpc8
  68. 2026-09-15 15:31 UTCNVD update
  69. 2026-09-15 14:33 UTCEG score recompute
  70. 2026-09-15 14:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-25826?
CVE-2026-25826 is a medium-severity vulnerability; its CVE record was published on September 15, 2026. An issue was discovered in Keyfactor SignServer before 7.6.0. The attribute ATTRIBUTESFILE in PKCS11CryptoToken can be set to a readable file but not an accepted file (i.e., recognized with attributes). In this case, an error is thrown which - together with the error - also prints the content of…
When was the CVE record for CVE-2026-25826 published?
The CVE record for CVE-2026-25826 was published on September 15, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 22, 2026; the record at its source may have been updated since.
Is CVE-2026-25826 actively exploited?
CVE-2026-25826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-25826?
CVE-2026-25826 has a CVSS v3.1 base score of 4.9 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-25826?
No fix for CVE-2026-25826 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "An issue was discovered in Keyfactor SignServer before 7.6.0." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-25826 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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