VDB
CVE-2026-32877
CVE-2026-32877
PUBLISHED
CVSS 8.199999809265137 HIGH
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.
EPSS 0.07% · 20.3th percentile
Risk Scores
CVSS v3.1
8.199999809265137
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS Score
0.07%
20.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| randombit | botan | >= 2.3.0, < 3.11.0, >= 2.3.0, < 3.11.0 |
| botan_project | botan | 2.3.0 |
Timeline
- Mar 30, 2026 CVE Published
- Mar 30, 2026 PoC Published
- Mar 30, 2026 PoC Published
- Mar 30, 2026 PoC Published
- Mar 31, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score