CVE-2016-1834
Heap-based buffer overflow in the xmlStrncat function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote
02 Description
Heap-based buffer overflow in the xmlStrncat function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 4.62% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 91.2% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-05-20 10:00Z10 YR AGO
- Last updated
- 2025-12-04 17:15Z10 MO AGO
- Reserved
- 2016-01-13
- Assigning CNA
- apple
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 36956395d6450315baaa44a309b2fee249a4850c0c04953d5dec731574be7327
05 Affected products
06 References
- git.gnome.orghttps://git.gnome.org/browse/libxml2/commit/?id=8fbbf5513d609c1770b391b99e33314cd0742704
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- kc.mcafee.comhttps://kc.mcafee.com/corporate/index?page=content&id=SB10170
- access.redhat.comRHSA-2016:1292https://access.redhat.com/errata/RHSA-2016:1292
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- support.apple.comhttps://support.apple.com/HT206567
- www.securityfocus.com90691http://www.securityfocus.com/bid/90691
- bugzilla.gnome.orghttps://bugzilla.gnome.org/show_bug.cgi?id=763071
- www.debian.orgDSA-3593https://www.debian.org/security/2016/dsa-3593
- xmlsoft.orghttp://xmlsoft.org/news.html
- lists.apple.comAPPLE-SA-2016-05-16-4http://lists.apple.com/archives/security-announce/2016/May/msg00004.html
- www.ubuntu.comUSN-2994-1http://www.ubuntu.com/usn/USN-2994-1
- support.apple.comhttps://support.apple.com/HT206566
- www.tenable.comhttps://www.tenable.com/security/tns-2016-18
- lists.apple.comAPPLE-SA-2016-05-16-3http://lists.apple.com/archives/security-announce/2016/May/msg00003.html
- support.apple.comhttps://support.apple.com/HT206564
- rhn.redhat.comRHSA-2016:2957http://rhn.redhat.com/errata/RHSA-2016-2957.html
- www.securitytracker.com1035890http://www.securitytracker.com/id/1035890
- lists.apple.comAPPLE-SA-2016-05-16-2http://lists.apple.com/archives/security-announce/2016/May/msg00002.html
- support.apple.comhttps://support.apple.com/HT206568
- lists.apple.comAPPLE-SA-2016-05-16-1http://lists.apple.com/archives/security-announce/2016/May/msg00001.html
07 Fixed in
Debian 12
- libxml2 Fixed in 2.9.3+dfsg1-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libxml2 Fixed in 2.9.3+dfsg1-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libxml2 Fixed in 2.9.3+dfsg1-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libxml2 Fixed in 2.9.1+dfsg1-3ubuntu4.8
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libxml2 Fixed in 2.9.3+dfsg1-1ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.