How severe is CVE-2023-26084?

CVE-2023-26084 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-26084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26084?

CVE-2023-26084 affects Arm Aarch64cryptolib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26084?

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

When was CVE-2023-26084 published?

CVE-2023-26084 was published on 2023-03-15 and last updated on 2026-06-17.

CVE-2023-26084

CVE-2023-26084 is a low-severity vulnerability in Arm Aarch64cryptolib with a CVSS 3.x base score of 3.7. 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-665.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Arm Aarch64cryptolib
Published: 2023-03-15
Last modified: 2026-06-17

Description

The armv8_dec_aes_gcm_full() API of Arm AArch64cryptolib before 86065c6 fails to the verify the authentication tag of AES-GCM protected data, leading to a man-in-the-middle attack. This occurs because of an improperly initialized variable.

Frequently asked questions

What is CVE-2023-26084?: The armv8_dec_aes_gcm_full() API of Arm AArch64cryptolib before 86065c6 fails to the verify the authentication tag of AES-GCM protected data, leading to a man-in-the-middle attack. This occurs because of an improperly initialized variable.
How severe is CVE-2023-26084?: CVE-2023-26084 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-26084 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26084?: CVE-2023-26084 affects Arm Aarch64cryptolib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26084?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-26084 published?: CVE-2023-26084 was published on 2023-03-15 and last updated on 2026-06-17.

References

https://github.com/ARM-software/AArch64cryptolib/security/advisories/GHSA-47c6-7x5x-r74g

Affected products (1)

cpe:2.3:a:arm:aarch64cryptolib:*:*:*:*:*:*:*:*

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