CVE-2018-10115
Incorrect initialization logic of RAR decoder objects in 7-Zip 18.03 and before can lead to usage of uninitialized memory, allowing remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Incorrect initialization logic of RAR decoder objects in 7-Zip 18.03 and before can lead to usage of uninitialized memory, allowing remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.54% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-665, CWE-908
- Affected
- 7-zip/7-zip
- Source
- cve@mitre.org
EPSS moved from 6.7% on 21 September 2026 to 4.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/104132Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040832Third Party Advisory, VDB Entry
- https://landave.io/2018/05/7-zip-from-uninitialized-memory-to-remote-code-execution/Exploit, Third Party Advisory
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/adc65bfa/Issue Tracking
- http://www.securityfocus.com/bid/104132Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040832Third Party Advisory, VDB Entry
- https://landave.io/2018/05/7-zip-from-uninitialized-memory-to-remote-code-execution/Exploit, Third Party Advisory
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/adc65bfa/Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.