CVE-2026-32877

HIGH EPSS 19.5%
Published Mar 30, 20263mo ago · Modified Jun 17, 20262w ago
8.2 CVSS 3.1
High
Find Similar
Published Mar 30, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
19.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
botan_projectbotan*≥2.3.0  –  <3.11.0

References 1

  • github.com https://github.com/randombit/botan/security/advisories/GHSA-7jj6-4r42-w9h6
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.