CVE-2023-39615
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service
02 Description
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 1.07% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 64.9% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-15.
- Red Hat severity
- Moderate. 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
- 2023-08-29 00:00Z3 YR AGO
- Last updated
- 2026-10-14 23:43Z14 DAYS AGO
- Reserved
- 2023-08-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
- Data version
- 5.2
- Document digest
- cf58585efe4d9119cca9711ff3c6359588eed6dae3a71a2b9504053091352aeb
05 Affected products
06 References
- gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/libxml2/-/issues/535
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/02/msg00028.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-556635.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-341067.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-784301.html
07 Fixed in
AlmaLinux 8
- libxml2 Fixed in 2.9.7-18.el8_9
- libxml2-devel Fixed in 2.9.7-18.el8_9
- python3-libxml2 Fixed in 2.9.7-18.el8_9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- libxml2 Fixed in 2.9.13-5.el9_3
- libxml2-devel Fixed in 2.9.13-5.el9_3
- python3-libxml2 Fixed in 2.9.13-5.el9_3
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- libxml2 Fixed in 2.9.7-18.el8_9
- libxml2-devel Fixed in 2.9.7-18.el8_9
- python3-libxml2 Fixed in 2.9.7-18.el8_9
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- libxml2 Fixed in 2.9.13-5.el9_3
- libxml2-devel Fixed in 2.9.13-5.el9_3
- python3-libxml2 Fixed in 2.9.13-5.el9_3
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- libxml2 Fixed in 2.9.14+dfsg-1.3~deb12u2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libxml2 Fixed in 2.12.7+dfsg+really2.9.14-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libxml2 Fixed in 2.12.7+dfsg+really2.9.14-1
Source: Debian Security Tracker, the Debian security team. 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.