PT-2026-29124 · Randombit · Botan

Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-32877

NVD

CVSS v3.1

8.2

High

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Botan is a C++ cryptography library. From version 2.3.0 to before version 3.11.0, during SM2 decryption, the code that checked the authentication code value (C3) failed to check that the encoded value was of the expected length prior to comparison. An invalid ciphertext can cause a heap over-read of up to 31 bytes, resulting in a crash or potentially other undefined behavior. This issue has been patched in version 3.11.0.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-32877

Affected Products

Botan

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-32877 · Security Note
• https://github.com/randombit/botan/security/advisories/GHSA-7jj6-4r42-w9h6 · Note