How severe is CVE-2025-26379?

CVE-2025-26379 has a CVSS 4.0 base score of 7.2, rated high severity.

Is CVE-2025-26379 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-26379?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-26379 have an EU (EUVD) identifier?

Yes. CVE-2025-26379 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204711.

When was CVE-2025-26379 published?

CVE-2025-26379 was published on 2025-12-22 and last updated on 2026-06-17.

CVE-2025-26379

CVE-2025-26379 is a high-severity vulnerability with a CVSS 4.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-338.

Key facts

Severity: High (CVSS 4.0 base score 7.2)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204711
Weakness: CWE-338
Published: 2025-12-22
Last modified: 2026-06-17

Description

Use of a weak pseudo-random number generator, which may allow an attacker to read or inject encrypted PowerG packets.

Frequently asked questions

What is CVE-2025-26379?: Use of a weak pseudo-random number generator, which may allow an attacker to read or inject encrypted PowerG packets.
How severe is CVE-2025-26379?: CVE-2025-26379 has a CVSS 4.0 base score of 7.2, rated high severity.
Is CVE-2025-26379 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-26379?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-26379 have an EU (EUVD) identifier?: Yes. CVE-2025-26379 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204711.
When was CVE-2025-26379 published?: CVE-2025-26379 was published on 2025-12-22 and last updated on 2026-06-17.

References

Other CWE-338 vulnerabilities

CVE-2026-56141 — Critical (CVSS 9.8): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429 account…
CVE-2026-3256 — Critical (CVSS 9.8): HTTP::Session versions before 0.54 for Perl defaults to using insecurely generated session ids. HTTP::Session defaults…
CVE-2025-15604 — Critical (CVSS 9.8): Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions. In versions…
CVE-2025-40926 — Critical (CVSS 9.8): Plack::Middleware::Session::Simple versions before 0.05 for Perl generates session ids insecurely. The default session…
CVE-2026-2439 — Critical (CVSS 9.8): Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id…
CVE-2025-15578 — Critical (CVSS 9.8): Maypole versions from 2.10 through 2.13 for Perl generates session ids insecurely. The session id is seeded with the…

Browse all CWE-338 vulnerabilities →