How severe is CVE-2026-41990?

CVE-2026-41990 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-41990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41990?

CVE-2026-41990 affects Gnupg Libgcrypt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41990?

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

Does CVE-2026-41990 have an EU (EUVD) identifier?

Yes. CVE-2026-41990 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25193.

When was CVE-2026-41990 published?

CVE-2026-41990 was published on 2026-04-23 and last updated on 2026-06-17.

CVE-2026-41990

CVE-2026-41990 is a medium-severity vulnerability in Gnupg Libgcrypt with a CVSS 3.x base score of 4.0. 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25193
Weakness: CWE-787
Affected product: Gnupg Libgcrypt
Published: 2026-04-23
Last modified: 2026-06-17

Description

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

Frequently asked questions

What is CVE-2026-41990?: Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
How severe is CVE-2026-41990?: CVE-2026-41990 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-41990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41990?: CVE-2026-41990 affects Gnupg Libgcrypt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41990 have an EU (EUVD) identifier?: Yes. CVE-2026-41990 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25193.
When was CVE-2026-41990 published?: CVE-2026-41990 was published on 2026-04-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*

More vulnerabilities in Gnupg Libgcrypt

CVE-2021-3345 — High (CVSS 7.8): _gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the…
CVE-2021-33560 — High (CVSS 7.5): Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to…
CVE-2018-6829 — High (CVSS 7.5): cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts,…
CVE-2017-0379 — High (CVSS 7.5): Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers…
CVE-2026-41989 — Medium (CVSS 6.7): Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext…
CVE-2017-7526 — Medium (CVSS 6.1): libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024…

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