How severe is CVE-2025-27498?

CVE-2025-27498 has a CVSS 4.0 base score of 5.6, rated medium severity.

Is CVE-2025-27498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27498?

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

Does CVE-2025-27498 have an EU (EUVD) identifier?

Yes. CVE-2025-27498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5557.

When was CVE-2025-27498 published?

CVE-2025-27498 was published on 2025-03-03 and last updated on 2026-06-17.

CVE-2025-27498

CVE-2025-27498 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.6. 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-347.

Key facts

Severity: Medium (CVSS 4.0 base score 5.6)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5557
Weakness: CWE-347
Published: 2025-03-03
Last modified: 2026-06-17

Description

aes-gcm is a pure Rust implementation of the AES-GCM. In decrypt_in_place_detached, the decrypted ciphertext (which is the correct ciphertext) is exposed even if the tag is incorrect. This is because in decrypt_inplace in asconcore.rs, tag verification causes an error to be returned with the plaintext contents still in buffer. The vulnerability is fixed in 0.4.3.

Frequently asked questions

What is CVE-2025-27498?: aes-gcm is a pure Rust implementation of the AES-GCM. In decrypt_in_place_detached, the decrypted ciphertext (which is the correct ciphertext) is exposed even if the tag is incorrect. This is because in decrypt_inplace in asconcore.rs, tag verification causes an error to be returned with the plaintext contents still in buffer. The vulnerability is fixed in 0.4.3.
How severe is CVE-2025-27498?: CVE-2025-27498 has a CVSS 4.0 base score of 5.6, rated medium severity.
Is CVE-2025-27498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-27498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-27498 have an EU (EUVD) identifier?: Yes. CVE-2025-27498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5557.
When was CVE-2025-27498 published?: CVE-2025-27498 was published on 2025-03-03 and last updated on 2026-06-17.

References

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