CVE-2025-66382

Summary

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.

Affected Software

Weaknesses

• CWE-407: CWE-407 Inefficient Algorithmic Complexity

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2025/12/02/1

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-253495.html

References

• https://github.com/libexpat/libexpat/issues/1076

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