botan3: Botan is a C++ cryptography library
CVE-2026-32877 is fixed in botan3 on 1 platform, first by DEBIAN-CVE-2026-32877, released March 30, 2026. It is not reported as exploited. Patch Radar priority: 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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| botan3 · Debian 13.5 (trixie) | 3.11.0+dfsg-2 | DEBIAN-CVE-2026-32877 | Mar 30, 2026 |
| botan3 · Debian 14 | 3.11.0+dfsg-2 | DEBIAN-CVE-2026-32877 | Mar 30, 2026 |
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