CVE-2026-118769Critical· 9.2▾ MidnightBotan is a C++ cryptography library. From 2.1.0 until 3.13.0, the Botan C API function botan_block_cipher_block_size converted a size_t block size to int without a bounds check. In an application that accepts external algorithm parameter…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.6 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.4%
Botan is a C++ cryptography library. From 2.1.0 until 3.13.0, the Botan C API function botan_block_cipher_block_size converted a size_t block size to int without a bounds check. In an application that accepts external algorithm parameter strings and uses the FFI raw ECB mode, an attacker can select the variable-block-size Lion cipher so that the reported size is truncated, the caller allocates insufficient memory, and later block processing causes memory corruption. The C++ API and normally used C API modes such as CBC and CTR are unaffected. This issue is fixed in version 3.13.0.
botan >= 2.1.0, < 3.13.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-118767Medium· 4.8Botan: Python binding bcrypt APIs truncate passwords containing embedded NULs
CVE-2026-118765High· 7.3Botan: AutoSeeded_RNG can become reinitialized from predictable data after clearing state
CVE-2026-118768Medium· 5.9Botan: CLI utility `ocsp_check` accepts unauthenticated responses
CVE-2026-118766Medium· 6.1Botan: Online OCSP redirects enable blind requests to internal HTTP services
CVE-2021-4034High· 7.8A local privilege escalation vulnerability was found on polkit's pkexec utility
CVE-2024-9143Medium· 4.3Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an applicat…