CVE-2021-4136
HighPublic PoC
Published: 19 December 2021
Published
19 December 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.0030
53.8th percentile
Risk Priority
16
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-4136 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Apple Mac Os X. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 46.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-34006
Vulnerability details
vim is vulnerable to Heap-based Buffer Overflow
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
vim
vim
≤ 8.2.3847
fedoraproject
fedora
34, 35
apple
mac os x
10.15.7 · 10.15 — 10.15.7
apple
macos
11.0 — 11.6.6 · 12.0 — 12.3
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
addresses: CWE-787
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.