CVE-2025-66382

low-risk
Published 2025-11-28

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.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.9/10 Low
LOCAL / HIGH complexity

Affected Products (1)

Affected Vendors

Libexpat Project

References (2)

Issue Tracking https://github.com/libexpat/libexpat/issues/1076
Mailing List http://www.openwall.com/lists/oss-security/2025/12/02/1
13
/ 100
low-risk
Severity 8/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal