Vulnerability DatabaseCVE-2025-59375
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CVE-2025-59375
Published:September 15, 2025
Updated:May 16, 2026
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
Affected Packages
expat (CONAN):
Affected version(s) >=2.2.7 <=2.7.1
Fix Suggestion:
Update to version no_fix
https://github.com/libexpat/libexpat.git (GITHUB):
Affected version(s) >=R_2_6_4 <R_2_7_3
Fix Suggestion:
Update to version R_2_7_3
Related Resources (11)
http://www.openwall.com/lists/oss-security/2026/05/01/5
https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
http://www.openwall.com/lists/oss-security/2025/09/16/2
https://security.alpinelinux.org/vuln/CVE-2025-59375
https://github.com/libexpat/libexpat/issues/1018
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
https://github.com/libexpat/libexpat/pull/1034
https://issues.oss-fuzz.com/issues/439133977
https://security-tracker.debian.org/tracker/CVE-2025-59375
https://cert-portal.siemens.com/productcert/html/ssa-089022.html
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
ATTACKED
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Exploit Maturity
HIGH
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
CWE-770
EPSS
Base Score:
0.08