CVE-2026-116743
libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data
- State
- Published
- Severity
- 6.8 Medium
- Published
- Oct 26, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 26, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-415 Double Free
Affected Products
| Product | Versions |
|---|---|
libmsiecflibyal |
|
References
- GitHub Issue #6issue-tracking
- https://github.com/libyal/libmsiecfproduct
- https://github.com/libyal/libmsiecf/commit/a99a703d190d62f6c21b6225cf84ce80037e45d5patch
- https://github.com/libyal/libmsiecf/blob/20260525/libmsiecf/libmsiecf_url_values.c#L824technical-description
- https://hackmd.io/@haindpwn/libmsiecf-url-record-partial-recovery-double-freethird-party-advisory
- VulnCheck Advisory: libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_datathird-party-advisory
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