How severe is CVE-2025-13912?

CVE-2025-13912 has a CVSS 4.0 base score of 1.0, rated low severity.

Is CVE-2025-13912 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13912?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-13912 have an EU (EUVD) identifier?

Yes. CVE-2025-13912 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202756.

When was CVE-2025-13912 published?

CVE-2025-13912 was published on 2025-12-11 and last updated on 2026-06-17.

CVE-2025-13912

CVE-2025-13912 is a low-severity vulnerability with a CVSS 4.0 base score of 1.0. 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-203.

Key facts

Severity: Low (CVSS 4.0 base score 1.0)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202756
Weakness: CWE-203
Published: 2025-12-11
Last modified: 2026-06-17

Description

Multiple constant-time implementations in wolfSSL before version 5.8.4 may be transformed into non-constant-time binary by LLVM optimizations, which can potentially result in observable timing discrepancies and lead to information disclosure through timing side-channel attacks.

Frequently asked questions

What is CVE-2025-13912?: Multiple constant-time implementations in wolfSSL before version 5.8.4 may be transformed into non-constant-time binary by LLVM optimizations, which can potentially result in observable timing discrepancies and lead to information disclosure through timing side-channel attacks.
How severe is CVE-2025-13912?: CVE-2025-13912 has a CVSS 4.0 base score of 1.0, rated low severity.
Is CVE-2025-13912 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-13912?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-13912 have an EU (EUVD) identifier?: Yes. CVE-2025-13912 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202756.
When was CVE-2025-13912 published?: CVE-2025-13912 was published on 2025-12-11 and last updated on 2026-06-17.

References

https://github.com/wolfSSL/wolfssl/pull/9148

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