CVE-2026-3664

Summary

A vulnerability was determined in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::compound_document::read_directory of the file source/detail/cryptography/compound_document.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to out-of-bounds read. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 147. Applying a patch is advised to resolve this issue.

Affected Software

Weaknesses

• CWE-125: Out-of-Bounds Read
• CWE-119: Memory Corruption

ADP Enrichment

CISA ADP Vulnrichment

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

References

• https://vuldb.com/?id.349553
• https://vuldb.com/?ctiid.349553
• https://vuldb.com/?submit.764646
• https://github.com/xlnt-community/xlnt/issues/141
• https://github.com/oneafter/0128/blob/main/xl5/repro
• https://github.com/xlnt-community/xlnt/pull/147
• https://github.com/xlnt-community/xlnt/

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