CVE-2025-59375
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
02 Description
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
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 ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 1.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 71.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-19.
- 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
- 2025-09-15 00:00Z1 YR AGO
- Last updated
- 2026-10-15 01:09Z14 DAYS AGO
- Reserved
- 2025-09-15
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:T/RC:C
- Weaknesses
- CWE-770Allocation of Resources Without Limits or ThrottlingBase
- Data version
- 5.2
- Document digest
- 3535febacef9de1b8707336dbc0cf46163f8c037db95cd6e1d4cb69fed173fdc
05 Affected products
06 References
- github.comhttps://github.com/libexpat/libexpat/issues/1018
- github.comhttps://github.com/libexpat/libexpat/pull/1034
- github.comhttps://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
- issues.oss-fuzz.comhttps://issues.oss-fuzz.com/issues/439133977
- github.comhttps://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/09/16/2
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/01/5
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-089022.html
07 Fixed in
AlmaLinux 8
- expat Fixed in 2.5.0-1.el8_10
- expat-devel Fixed in 2.5.0-1.el8_10
- mingw32-expat Fixed in 2.5.0-1.el8_10
- mingw32-fontconfig Fixed in 2.12.6-4.el8_10
- mingw64-expat Fixed in 2.5.0-1.el8_10
- mingw64-fontconfig Fixed in 2.12.6-4.el8_10
- python3.12 Fixed in 3.12.13-2.el8_10
- python3.12-debug Fixed in 3.12.13-2.el8_10
- python3.12-devel Fixed in 3.12.13-2.el8_10
- python3.12-idle Fixed in 3.12.13-2.el8_10
- python3.12-libs Fixed in 3.12.13-2.el8_10
- python3.12-rpm-macros Fixed in 3.12.13-2.el8_10
- python3.12-test Fixed in 3.12.13-2.el8_10
- python3.12-tkinter Fixed in 3.12.13-2.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- expat Fixed in 2.5.0-5.el9_7.1
- expat-devel Fixed in 2.5.0-5.el9_7.1
- python3.12 Fixed in 3.12.13-2.el9_8
- python3.12-debug Fixed in 3.12.13-2.el9_8
- python3.12-devel Fixed in 3.12.13-2.el9_8
- python3.12-idle Fixed in 3.12.13-2.el9_8
- python3.12-libs Fixed in 3.12.13-2.el9_8
- python3.12-test Fixed in 3.12.13-2.el9_8
- python3.12-tkinter Fixed in 3.12.13-2.el9_8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 10
- expat Fixed
A version is affected if any line below covers it.
- Affected before 2.7.1-1.el10_0.3
- Affected before 2.7.1-1.el10_1.3
- expat-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.7.1-1.el10_0.3
- Affected before 2.7.1-1.el10_1.3
- python-unversioned-command Fixed in 3.12.13-2.el10_2
- python3 Fixed in 3.12.13-2.el10_2
- python3-debug Fixed in 3.12.13-2.el10_2
- python3-devel Fixed in 3.12.13-2.el10_2
- python3-idle Fixed in 3.12.13-2.el10_2
- python3-libs Fixed in 3.12.13-2.el10_2
- python3-test Fixed in 3.12.13-2.el10_2
- python3-tkinter Fixed in 3.12.13-2.el10_2
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- expat Fixed in 2.5.0-1.el8_10
- expat-devel Fixed in 2.5.0-1.el8_10
- mingw32-expat Fixed in 2.5.0-1.el8_10
- mingw32-fontconfig Fixed in 2.12.6-4.el8_10
- mingw64-expat Fixed in 2.5.0-1.el8_10
- mingw64-fontconfig Fixed in 2.12.6-4.el8_10
- python3.12 Fixed in 3.12.13-2.el8_10
- python3.12-debug Fixed in 3.12.13-2.el8_10
- python3.12-devel Fixed in 3.12.13-2.el8_10
- python3.12-idle Fixed in 3.12.13-2.el8_10
- python3.12-libs Fixed in 3.12.13-2.el8_10
- python3.12-rpm-macros Fixed in 3.12.13-2.el8_10
- python3.12-test Fixed in 3.12.13-2.el8_10
- python3.12-tkinter Fixed in 3.12.13-2.el8_10
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
- expat Fixed in 2.5.0-5.el9_7.1
- expat-devel Fixed in 2.5.0-5.el9_7.1
- python3.12 Fixed in 3.12.13-2.el9_8
- python3.12-debug Fixed in 3.12.13-2.el9_8
- python3.12-devel Fixed in 3.12.13-2.el9_8
- python3.12-idle Fixed in 3.12.13-2.el9_8
- python3.12-libs Fixed in 3.12.13-2.el9_8
- python3.12-test Fixed in 3.12.13-2.el9_8
- python3.12-tkinter Fixed in 3.12.13-2.el9_8
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.
CloudLinux 10
- expat Fixed
A version is affected if any line below covers it.
- Affected before 2.7.1-1.el10_0.3
- Affected before 2.7.1-1.el10_1.3
- expat-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.7.1-1.el10_0.3
- Affected before 2.7.1-1.el10_1.3
- python-unversioned-command Fixed in 3.12.13-2.el10_2
- python3 Fixed in 3.12.13-2.el10_2
- python3-debug Fixed in 3.12.13-2.el10_2
- python3-devel Fixed in 3.12.13-2.el10_2
- python3-idle Fixed in 3.12.13-2.el10_2
- python3-libs Fixed in 3.12.13-2.el10_2
- python3-test Fixed in 3.12.13-2.el10_2
- python3-tkinter Fixed in 3.12.13-2.el10_2
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 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
- expat Fixed in 2.5.0-1+deb12u5
- firefox-esr Fixed in 140.9.0esr-1~deb12u1
- thunderbird Fixed in 1:140.9.0esr-1~deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- expat Fixed in 2.8.2-1~deb13u1
- firefox-esr Fixed in 140.9.0esr-1~deb13u1
- thunderbird Fixed in 1:140.9.0esr-1~deb13u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- expat Fixed in 2.7.2-1
- firefox-esr Fixed in 140.9.0esr-1
- thunderbird Fixed in 1:140.9.0esr-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- cadaver No fix yet
- gdcm No fix yet
- insighttoolkit4 No fix yet
- matanza No fix yet
- smart No fix yet
- tdom No fix yet
- wbxml2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- cadaver No fix yet
- gdcm No fix yet
- insighttoolkit4 No fix yet
- matanza No fix yet
- smart No fix yet
- tdom No fix yet
- vnc4 No fix yet
- wbxml2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- cadaver No fix yet
- insighttoolkit4 No fix yet
- matanza No fix yet
- tdom No fix yet
- wbxml2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- cadaver No fix yet
- expat No fix yet
- insighttoolkit4 No fix yet
- matanza No fix yet
- tdom No fix yet
- wbxml2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- cadaver No fix yet
- expat Fixed in 2.6.1-2ubuntu0.5
- matanza No fix yet
- tdom No fix yet
- wbxml2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- cadaver No fix yet
- expat Fixed in 2.7.1-2ubuntu0.2
- matanza No fix yet
- swish-e No fix yet
- tdom No fix yet
- wbxml2 No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- cadaver No fix yet
- matanza No fix yet
- tdom No fix yet
- wbxml2 No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- cadaver No fix yet
- matanza No fix yet
- swish-e No fix yet
- tdom No fix yet
- wbxml2 No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- coin3 No fix yet
- expat No fix yet
- vnc4 No fix yet
- vtk No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- ayttm No fix yet
- cableswig No fix yet
- coin3 No fix yet
- expat No fix yet
- libxmltok No fix yet
- swish-e No fix yet
- vnc4 No fix yet
- vtk No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- coin3 No fix yet
- expat No fix yet
- libxmltok No fix yet
- swish-e No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- expat No fix yet
- libxmltok No fix yet
- swish-e No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- libxmltok No fix yet
- swish-e No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 24.04 LTS
- libxmltok No fix yet
- swish-e No fix yet
- xmlrpc-c No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 26.04 LTS
- swish-e No fix yet
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.