The trad_enc_decrypt_update function in archive_read_support_format_zip.c in libarchive before 3.2.0 allows remote attackers to cause a den…

published 2016-09-20 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-8783

cvss: 5.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

The trad_enc_decrypt_update function in archive_read_support_format_zip.c in libarchive before 3.2.0 allows remote attackers to cause a denial of service (out-of-bounds heap read and crash) via a crafted zip file, related to reading the password.

Patch / fix

distros 1

libarchive Debian 14, Debian 13, Debian 12 3.2.0-2

debian advisories DEBIAN-CVE-2015-8927

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-2015-8927 updated 2026-11-07 cvss 3.0

libarchive: Heap out of bounds read when reading password for malformed ZIP

Red Hat Enterprise Linux 6 libarchive Red Hat Enterprise Linux 7 bsdtar, bsdcpio, libarchive
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

1.53% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/libarchive/libarchive/issues/523 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-125 Out-of-bounds Read

References

github.com /libarchive/libarchive/issues/523
exploit, issue-tracking, third-party-advisory
security.gentoo.org /glsa/201701-03
vendor-advisory
blog.fuzzing-project.org /47-Many-invalid-memory-access-issues-in-libarchive.html
third-party-advisory
openwall.com /lists/oss-security/2016/06/17/2
mailing-list, third-party-advisory
securityfocus.com /bid/91329
vdb-entry
openwall.com /lists/oss-security/2016/06/17/5
mailing-list, third-party-advisory

Sources

CVE List CVE-2015-8927
NVD CVE-2015-8927

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.

Summary