CVE catalog
CVE-2026-111134
libfwsi: CVE-2026-111134
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
libfwsi through 20260522 contains a heap out-of-bounds read vulnerability in libfwsi_mtp_file_entry_values_read_data() that allows attackers to read past buffer bounds via crafted MTP file entry shell items. Attackers can embed a 10 to 73 byte shell item with item data size of 44 or more in .lnk files, jump lists or shell bags to crash libfwsi consumers.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libfwsi | sid | 20240423-1 | unknown |
| Debian | libfwsi | forky | 20240423-1 | unknown |
| Debian | libfwsi | trixie | 20240423-1 | unknown |
| Debian | libfwsi | bookworm | 20181227-1.1 | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libfwsi | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libfwsi | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libfwsi | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libfwsi | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libfwsi1]Affected
Source package: [libfwsi]
Details (2)
20181227-1.1+b4· amd64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
20181227-1.1+b4· arm64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
- [libfwsi-dev]Affected
Source package: [libfwsi]
Details (2)
20181227-1.1+b4· amd64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
20181227-1.1+b4· arm64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
- [python3-libfwsi]Affected
Source package: [libfwsi]
Details (2)
20181227-1.1+b4· amd64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
20181227-1.1+b4· arm64 · bookwormAffected
dsa · libfwsi · debian · bookworm; dsa · libfwsi · debian · 12
[Debian 13 (Trixie)]
- [libfwsi1t64]Affected
Source package: [libfwsi]
Details (2)
20240423-1· amd64 · trixieAffected
dsa · libfwsi · debian · 13
20240423-1· arm64 · trixieAffected
dsa · libfwsi · debian · 13
- [libfwsi-dev]Affected
Source package: [libfwsi]
Details (2)
20240423-1· amd64 · trixieAffected
dsa · libfwsi · debian · 13
20240423-1· arm64 · trixieAffected
dsa · libfwsi · debian · 13
- [python3-libfwsi]Affected
Source package: [libfwsi]
Details (2)
20240423-1· amd64 · trixieAffected
dsa · libfwsi · debian · 13
20240423-1· arm64 · trixieAffected
dsa · libfwsi · debian · 13
Observed:
References
- [https://github.com/libyal/libfwsi]
- [https://github.com/libyal/libfwsi/blob/2f2aba25b888f37314a39d8c3e71c0e3ced56e59/libfwsi/libfwsi_mtp_file_entry_values.c#L245-L267]
- [https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-111134]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-111134]
- [https://security-tracker.debian.org/tracker/CVE-2026-111134]
- [https://www.vulncheck.com/advisories/libfwsi-through-20260522-heap-out-of-bounds-read-via-libfwsi-mtp-file-entry-values-read-data]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]