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CVE-2026-55200

libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c PUBLISHED

Description (CNA)

libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.

Affected (CNA)

Vendor / productVersions
libssh2 / libssh2affected 1.11.1; affected 1c3f1b7da588f2652260285529ec3c1f1125eb4e before 97acf3dfda80c91c3a8c9f2372546301d4a1a7a8

CWE

CWE-680

References

ADP enrichment

CISA-ADP

No English description supplied.