점검 대응높음KEV 미등록
CVE-2026-66034
libssh2 libssh2 취약점
libssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap out-of-bounds read and a free of an uninitialized pointer via the publickey subsystem. In libssh2_publickey_list_fetch(), the version 1 response parser reads a server-controlled comment_len value and advances the parse pointer without verifying sufficient bytes remain in the buffer, causing the out-of-bounds read to leak heap pointers from adjacent allocations defeating ASLR, followed by heap allocator state corruption when the...
- 대응 우선순위
- 점검
- CVSS
- 7.7
- EPSS
- - 백분위 -
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.07.25