CVE-2026-116743

CVSS 6.8 (medium) · published 2026-10-26

libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.

Weakness: CWE-415

Source: NVD CVE-2026-116743

References

• https://github.com/libyal/libmsiecf
• https://github.com/libyal/libmsiecf/blob/20260525/libmsiecf/libmsiecf_url_values.c#L824
• https://github.com/libyal/libmsiecf/commit/a99a703d190d62f6c21b6225cf84ce80037e45d5
• https://github.com/libyal/libmsiecf/issues/6
• https://hackmd.io/@haindpwn/libmsiecf-url-record-partial-recovery-double-free
• https://www.vulncheck.com/advisories/libyal-libmsiecf-through-20260525-double-free-via-libmsiecf-url-values-read-data
• https://hackmd.io/@haindpwn/libmsiecf-url-record-partial-recovery-double-free

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