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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 3
- StatusPublished → DeferredNVD modified 2026-10-27 16:04
- StatusReceived → PublishedNVD modified 2026-10-26 21:52
- First seenCVSS 6.8NVD modified 2026-10-26 22:16
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- 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