CVE-2016-9296
A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.02%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.02% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- 7-zip/p7zip
- Source
- cve@mitre.org
EPSS moved from 5.8% on 21 September 2026 to 7.0% 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/94294Third Party Advisory, VDB Entry
- https://github.com/yangke/7zip-null-pointer-dereferenceIssue Tracking, Patch, Third Party Advisory
- https://sourceforge.net/p/p7zip/bugs/185/Issue Tracking, Third Party Advisory
- https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/94294Third Party Advisory, VDB Entry
- https://github.com/yangke/7zip-null-pointer-dereferenceIssue Tracking, Patch, Third Party Advisory
- https://sourceforge.net/p/p7zip/bugs/185/Issue Tracking, Third Party Advisory
- https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.