CVE-2026-9058

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

For untrusted certificates that contain the "Authority Information Access - caIssuers URI" extension, Szafir SDK will automatically download the parent CA certificate from the specified URL and will import it to its trust store as a "nonqualified" certificate. In such a case, Szafir SDK returns a success status code of 0 ("Positively verified") upon successful cryptographic verification and a certificate status of "nonqualified".

For other types of untrusted certificates, Szafir SDK returns a success status code of 0 ("Positively verified") upon successful cryptographic verification and a certificate status of "nondetermined".

This may lead integrating applications to incorrectly treat the digital signature as valid despite an untrusted certificate chain. This flaw enables authentication bypass and user impersonation: (1) in use-cases other than qualified certificate authentication, or (2) if the qualified certificate authentication use-case is not correctly implemented by the integrating application.

This issue was fixed in version 1.8.463.2.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

May 25, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated May 28, 2026
No patch confirmed yet.
generic

Podpis elektroniczny Szafir

https://www.elektronicznypodpis.pl/
generic

Podatność w oprogramowaniu Szafir SDK | CERT Polska

https://cert.pl/posts/2026/05/CVE-2026-9058

Vendor Advisories for CVE-2026-9058(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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 183 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9058?
CVE-2026-9058 is a critical vulnerability published on May 25, 2026. For untrusted certificates that contain the "Authority Information Access - caIssuers URI" extension, Szafir SDK will automatically download the parent CA certificate from the specified URL and will import it to its trust store as a "nonqualified" certificate. In such a case, Szafir SDK returns a…
When was CVE-2026-9058 disclosed?
CVE-2026-9058 was first published in the National Vulnerability Database on May 25, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9058 actively exploited?
CVE-2026-9058 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 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-9058?
CVE-2026-9058 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-9058?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9058, 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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