CVE-2025-66382
LOWlibexpat < 2.7.3 - Denial of Service via Crafted File Processing
Title source: llmDescription
In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
References (4)
Core 4
Core References
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-253495.html
Issue Tracking
https://github.com/libexpat/libexpat/issues/1076
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Scores
CVSS v3
2.9
EPSS
0.0018
EPSS Percentile
7.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-407
Status
published
Products (2)
libexpat project/libexpat
< 2.7.5
libexpat_project/libexpat
< 2.7.3
Published
Nov 28, 2025
Tracked Since
Feb 18, 2026