CVE-2026-32249 | BDVDB-2026-320250 Detail

Description#

Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-03-12Record published in the CVE List.
2. Version 22026-03-13Most recent update recorded in the CVE List.