CVE catalog

CVE-2016-6262

libidn: CVE-2016-6262

Severity: High · CVSS 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Jul 21, 2016, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 6.51% · Oct 25, 2026

idn in libidn before 1.33 might allow remote attackers to obtain sensitive memory information by reading a zero byte as input, which triggers an out-of-bounds read, a different vulnerability than CVE-2015-8948.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libidn	sid	`1.44-1`	not affected
Debian	libidn	forky	`1.44-1`	not affected
Debian	libidn	trixie	`1.43-1`	not affected
Debian	libidn	bookworm	`1.41-1`	not affected
Alpine	libidn	3.10	`1.33-r0`	fixed
Alpine	libidn	3.11	`1.33-r0`	fixed
Alpine	libidn	3.12	`1.33-r0`	fixed
Alpine	libidn	3.13	`1.33-r0`	fixed
Alpine	libidn	3.14	`1.33-r0`	fixed
Alpine	libidn	3.15	`1.33-r0`	fixed
Alpine	libidn	3.16	`1.33-r0`	fixed
Alpine	libidn	3.17	`1.33-r0`	fixed
Alpine	libidn	3.18	`1.33-r0`	fixed
Alpine	libidn	3.19	`1.33-r0`	fixed
Alpine	libidn	3.2	`1.33-r0`	fixed
Alpine	libidn	3.20	`1.33-r0`	fixed
Alpine	libidn	3.21	`1.33-r0`	fixed
Alpine	libidn	3.22	`1.33-r0`	fixed
Alpine	libidn	3.23	`1.33-r0`	fixed
Alpine	libidn	3.24	`1.33-r0`	fixed
Alpine	libidn	3.3	`1.33-r0`	fixed
Alpine	libidn	3.4	`1.33-r0`	fixed
Alpine	libidn	3.5	`1.33-r0`	fixed
Alpine	libidn	3.6	`1.33-r0`	fixed
Alpine	libidn	3.7	`1.33-r0`	fixed
Alpine	libidn	3.8	`1.33-r0`	fixed
Alpine	libidn	3.9	`1.33-r0`	fixed
Ubuntu	libidn	14.04	`1.28-1ubuntu1`	vulnerable
Ubuntu	libidn	14.04	`1.28-1ubuntu2`	vulnerable
Ubuntu	libidn	14.04	`1.28-1ubuntu2.1`	fixed
Ubuntu	libidn	16.04	`1.28-1ubuntu2`	vulnerable
Ubuntu	libidn	16.04	`1.32-3ubuntu1`	vulnerable
Ubuntu	libidn	16.04	`1.32-3ubuntu1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libidn	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	libidn	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	libidn	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	libidn	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	libidn	apk	3.10	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.11	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.12	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.13	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.14	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.15	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.16	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.17	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.18	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.19	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.2	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.20	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.21	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.22	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.23	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.24	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.3	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.4	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.5	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.6	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.7	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.8	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Alpine	libidn	apk	3.9	`1.33-r0`	Not reported	ALPINE-CVE-2016-6262	Not reported
Ubuntu	libidn	deb	14.04	`1.28-1ubuntu2.1`	Not reported	UBUNTU-CVE-2016-6262	Not reported
Ubuntu	libidn	deb	16.04	`1.32-3ubuntu1.1`	Not reported	UBUNTU-CVE-2016-6262	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[idn]Not affected
Source package: [libidn]
Details (2)
- 1.41-1 · amd64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
- 1.41-1 · arm64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
[libidn11-dev]Not affected
Source package: [libidn]
Details (2)
- 1.41-1 · amd64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
- 1.41-1 · arm64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
[libidn12]Not affected
Source package: [libidn]
Details (2)
- 1.41-1 · amd64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
- 1.41-1 · arm64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
[libidn-dev]Not affected
Source package: [libidn]
Details (2)
- 1.41-1 · amd64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm
- 1.41-1 · arm64 · bookworm
  Not affected
  dsa · libidn · debian · bookworm

Observed: Oct 23, 2026, 5:22:36 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]