CVE-2025-40905

HIGHNVD 7.37.3—Trending — 3 sources updated this week

7.3

WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

CVSS v3: 7.3
EG Score: 7.3(medium)
EPSS: 18.8%
KEV: Not listed

Published

February 13, 2026

Last Modified

March 10, 2026

References (4)

9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://metacpan.org/release/DBOOK/WWW-OAuth-1.000/source/lib/WWW/OAuth.pm#L86
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://perldoc.perl.org/functions/rand
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://security.metacpan.org/docs/guides/random-data-for-security.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/02/13/1

Weakness Classification(1)

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

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:57 UTCEG score recompute
2026-05-29 13:57 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2025-40905?

CVE-2025-40905 is a high vulnerability published on February 13, 2026. WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

When was CVE-2025-40905 disclosed?

CVE-2025-40905 was first published in the National Vulnerability Database on February 13, 2026, with the most recent update on March 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-40905 actively exploited?

CVE-2025-40905 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-40905?

CVE-2025-40905 has a CVSS v3 base score of 7.3 (NVD).

How do I remediate CVE-2025-40905?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40905, 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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CVE-2025-40905

📅 Published

🔄 Last Modified

🔗 References (4)