CVE-2025-66382CWE-407

CVE-2025-66382

Low · published November 28, 2025

CVSS v3.1
2.9
EPSS
0%
Percentile
9.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00203 · 9.7th percentile
Weakness
CWE-407 · Inefficient Algorithmic Complexity
Published
2025-11-28T12:15Z
Affected products (1)
ProductVersionsFixed in
libexpat_project/libexpat≤ 2.7.3—
References (4)
https://github.com/libexpat/libexpat/issues/1076 · [email protected]http://www.openwall.com/lists/oss-security/2025/12/02/1 · af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/html/ssa-082556.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-253495.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
EPSS history
Timeline
  • 28 NOV 00:00Z
    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
    cvelistv5