CVE-2026-74887

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under the CNA's CVSS v4.0 (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 89% 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: cvss_v4, epss
Trending — 5 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.

openssl_encrypt before 1.4.0 imports Python's non-cryptographic 'random' module (Mersenne Twister PRNG) at line 15 of openssl_encrypt/modules/pqc.py. No direct calls to random.* were present in the code, so no cryptographic operation is currently affected; however, the import creates a hazard that future code could inadvertently use random.randint() instead of a cryptographically secure alternative (secrets/os.urandom), producing predictable values since the Mersenne Twister state can be recovered from approximately 624 outputs. Fixed by removing the import in 1.4.0.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 17, 2026
Patch available. Sources: github.
generic

openssl_encrypt before 1.4.0 Insecure Random Import in PQC Module | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-insecure-random-import-in-pqc-module
github Patch Available

Non-cryptographic random module imported in PQC crypto module · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-cx72-m6xj-3vf6

Vendor Advisories for CVE-2026-74887(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 38× in last 7d / 38× 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. 2026-08-21 07:17 UTCGHSA enrichment
  2. 2026-08-21 03:18 UTCGHSA enrichment
  3. 2026-08-20 23:17 UTCEG score recompute
  4. 2026-08-20 23:17 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 19:19 UTCGHSA enrichment
  7. 2026-08-20 15:18 UTCGHSA enrichment
  8. 2026-08-20 11:19 UTCGHSA enrichment
  9. 2026-08-20 07:20 UTCGHSA enrichment
  10. 2026-08-20 03:21 UTCGHSA enrichment
  11. 2026-08-19 23:21 UTCGHSA enrichment
  12. 2026-08-19 19:22 UTCEG score recompute
  13. 2026-08-19 19:22 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 15:19 UTCGHSA enrichment
  16. 2026-08-19 11:16 UTCGHSA enrichment
  17. 2026-08-19 07:17 UTCGHSA enrichment
  18. 2026-08-19 03:18 UTCGHSA enrichment
  19. 2026-08-18 23:18 UTCGHSA enrichment
  20. 2026-08-18 19:17 UTCGHSA enrichment
  21. 2026-08-18 15:18 UTCEG score recompute
  22. 2026-08-18 15:18 UTCGHSA enrichment
  23. 2026-08-18 15:18 UTCNVD update
  24. 2026-08-18 14:51 UTCEG score recompute
  25. 2026-08-18 14:51 UTCGHSA enrichment
Show 13 more
  1. 2026-08-18 14:49 UTCMITRE cvelistV5CVSS v3 → 9.3 · severity → CRITICAL
  2. 2026-08-18 13:49 UTCEPSS rescore
  3. 2026-08-18 13:49 UTCEPSS rescore
  4. 2026-08-18 11:37 UTCGHSA enrichment
  5. 2026-08-18 07:37 UTCGHSA enrichment
  6. 2026-08-18 03:36 UTCGHSA enrichment
  7. 2026-08-17 23:36 UTCGHSA enrichment
  8. 2026-08-17 19:37 UTCGHSA enrichment
  9. 2026-08-17 15:38 UTCGHSA enrichment
  10. 2026-08-17 11:39 UTCEG score recompute
  11. 2026-08-17 11:37 UTCNVD update
  12. 2026-08-17 11:13 UTCEG score recompute
  13. 2026-08-17 11:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74887?
CVE-2026-74887 is a critical vulnerability published on August 17, 2026. opensslencrypt before 1.4.0 imports Python's non-cryptographic 'random' module (Mersenne Twister PRNG) at line 15 of opensslencrypt/modules/pqc.py. No direct calls to random.* were present in the code, so no cryptographic operation is currently affected; however, the import creates a hazard that…
When was CVE-2026-74887 disclosed?
CVE-2026-74887 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74887 actively exploited?
CVE-2026-74887 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 88.9% of all scored CVEs.
What is the CVSS score of CVE-2026-74887?
CVE-2026-74887 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-74887?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74887, 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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