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Fencer Intel
high 7.8

CVE-2016-2334 in the critical feed json

Heap-based buffer overflow in the NArchive::NHfs::CHandler::ExtractZlibFile method in 7zip before 16.00 and p7zip allows remote attackers t…

published 2016-12-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3418

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.7%
EPSS 14.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

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.

Patch / fix

  • p7zip Debian 13, Debian 12 15.14.1+dfsg-2

debian advisories DEBIAN-CVE-2016-2334

  • p7zip openSUSE Tumbleweed 16.02-2.1

opensuse advisories openSUSE-SU-2024:10322-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-2334 updated cvss 4.0

p7zip: Heap-buffer-overflow vulnerability

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

14.74% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • talosintel.com http://www.talosintel.com/reports/TALOS-2016-0093/ referenced PoC, tagged "exploit" by a source, unverified
  • blog.talosintel.com http://blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.html 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 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel 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.