Use After Free in Apple macOS
CVE-2021-4173
vim is vulnerable to Use After Free
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Apple macOS — versions 10.15.7
- Apple Mac OS X — versions 10.15.7
- Vim
- Vim Vim/vim — versions unspecified
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- huntr.dev/bounties/a1b236b9-89fb-4ccf-9689-ba11b471e766 (Exploit, Third Party Advisory)
- github.com/vim/vim/commit/9c23f9bb5fe435b28245ba8ac65aa0ca6b902c04 (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.openwall.com/lists/oss-security/2022/01/15/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- support.apple.com/kb/HT213183 (Third Party Advisory, Release Notes)
- seclists.org/fulldisclosure/2022/Mar/29 (mailing-list, Mailing List, Third Party Advisory)
- support.apple.com/kb/HT213256 (Third Party Advisory)
- seclists.org/fulldisclosure/2022/May/35 (mailing-list, Mailing List, Third Party Advisory)
- support.apple.com/kb/HT213343 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-4173?
- CVE-2021-4173 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 7.8/10. Published 2021-12-27.
- How severe is CVE-2021-4173?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-4173 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.