6.6

CVE-2026-45130

Exploit

Vim: Heap Buffer Overflow in spell file loading

Vim is an open source, command line text editor. Prior to version 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Neovim ≫ Neovim Version <= 0.12.2
Vim ≫ Vim Version < 9.2.0450
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.158
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
security-advisories@github.com 6.6 1.8 4.7
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://github.com/vim/vim/security/advisories/GHSA-q4jv-r9gj-6cwv
Patch
Vendor Advisory
Exploit
https://github.com/vim/vim/commit/92993329178cb1f72d700fff45ca86e1c2d369f8
Patch
https://github.com/vim/vim/releases/tag/v9.2.0450
Product
http://www.openwall.com/lists/oss-security/2026/05/14/3
Third Party Advisory
Mailing List