CVE-2025-59375
Status: ModifiedHigh (7.5)—
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Base score: 7.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.31%
- Percentile among all scored CVEs: 70
- Score date: 10/5/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1190Exploit Public-Facing Applicationinitial access85 % - Primary impact
T1499Endpoint Denial of Serviceimpact90 %
AV:N/AC:L/PR:N sin UI indica T1190. CWE-770 (asignación dinámica excesiva) causa DoS por consumo de memoria, confirmado por 'large dynamic memory allocations' y CVSS impact A:H.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- CWE-770
References
- https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
- https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
- https://github.com/libexpat/libexpat/issues/1018
- https://github.com/libexpat/libexpat/pull/1034
- https://issues.oss-fuzz.com/issues/439133977
- http://www.openwall.com/lists/oss-security/2025/09/16/2
- http://www.openwall.com/lists/oss-security/2026/05/01/5
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
Raw JSON (NVD)
Show
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