CVE-2018-20252 json
In WinRAR versions prior to and including 5.60, there is an out-of-bounds write vulnerability during parsing of crafted ACE and RAR archive…
published 2019-02-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-12815
- cvss
- 7.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
In WinRAR versions prior to and including 5.60, there is an out-of-bounds write vulnerability during parsing of crafted ACE and RAR archive formats. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Exploit prediction
3.60% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- research.checkpoint.com https://research.checkpoint.com/extracting-code-execution-from-winrar/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Check Point Software Technologies Ltd. WinRAR
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
research.checkpoint.com
/extracting-code-execution-from-winrar/
exploit, third-party-advisory
-
win-rar.com
/whatsnew.html
release-notes, vendor-advisory
-
securityfocus.com
/bid/106948
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-20252
- NVD CVE-2018-20252
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.