CVE-2016-2334
Heap-based buffer overflow in the NArchive::NHfs::CHandler::ExtractZlibFile method in 7zip before 16.00 and p7zip allows remote attackers to execute arbitrary code via a crafted HFS+ image.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
Heap-based buffer overflow in the NArchive::NHfs::CHandler::ExtractZlibFile method in 7zip before 16.00 and p7zip allows remote attackers to execute arbitrary code via a crafted HFS+ image.
- 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
- 14.74% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- 7-zip/7-zip · fedoraproject/fedora · oracle/solaris
- Source
- cret@cert.org
EPSS moved from 19.6% on 21 September 2026 to 14.7% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.htmlExploit, Third Party Advisory
- http://blog.talosintelligence.com/2017/11/exploiting-cve-2016-2334.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/90531Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035876Third Party Advisory, VDB Entry
- http://www.talosintel.com/reports/TALOS-2016-0093/Exploit, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DNYIQAU3FKFBNFPK6GKYTSVRHQA7PTYT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DTGWICT3KYYDPDXRNO5SXD32GZICGRIR/
- https://security.gentoo.org/glsa/201701-27
- http://blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.htmlExploit, Third Party Advisory
- http://blog.talosintelligence.com/2017/11/exploiting-cve-2016-2334.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/90531Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035876Third Party Advisory, VDB Entry
- http://www.talosintel.com/reports/TALOS-2016-0093/Exploit, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DNYIQAU3FKFBNFPK6GKYTSVRHQA7PTYT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DTGWICT3KYYDPDXRNO5SXD32GZICGRIR/
- https://security.gentoo.org/glsa/201701-27
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.