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Fencer Vulns
high 8.8

CVE-2016-2335 json

The CInArchive::ReadFileItem method in Archive/Udf/UdfIn.cpp in 7zip 9.20 and 15.05 beta and p7zip allows remote attackers to cause a denia…

published 2016-06-07 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3419

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.8%
EPSS 9.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The CInArchive::ReadFileItem method in Archive/Udf/UdfIn.cpp in 7zip 9.20 and 15.05 beta and p7zip allows remote attackers to cause a denial of service (out-of-bounds read) or execute arbitrary code via the PartitionRef field in the Long Allocation Descriptor in a UDF file.

Patch / fix

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

debian advisories DEBIAN-CVE-2016-2335

  • p7zip Ubuntu 14.04 LTS 9.20.1~dfsg.1-4+deb7u2build0.14.04.1
  • p7zip Ubuntu 16.04 LTS 9.20.1~dfsg.1-4.2ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-2335

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • p7zip SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +3 more 9.20.1-6.1

suse advisories SUSE-SU-2016:1593-1

  • 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-2016-2335 updated cvss 5.1

p7zip: Out-of-bounds read vuilerability

  • 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

9.79% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.talosintel.com http://blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.html referenced PoC, tagged "exploit" by a source, unverified
  • talosintel.com http://www.talosintel.com/reports/TALOS-2016-0094/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/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

Classification

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

References

Sources

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.