Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck
CVE-2026-110716unshield through 1.6.2 Heap Out-of-Bounds Read via unshield_get_file_table
Medium 5.5
In plain English
A medium-severity out-of-bounds read in unshield from twogood. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
unshield through 1.6.2 contains a heap out-of-bounds read vulnerability in unshield_get_file_table() that allows attackers to read past heap allocations via unchecked cabinet header offsets. Attackers can supply a crafted InstallShield cabinet with out-of-range file_table_offset or large file counts to crash the unshield tool or library consumers.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | unshield | no fix listed | DEBIAN-CVE-2026-110716 |
| Debian:13 | unshield | no fix listed | DEBIAN-CVE-2026-110716 |
| Debian:14 | unshield | no fix listed | DEBIAN-CVE-2026-110716 |
| Ubuntu:22.04:LTS | unshield | no fix listed | UBUNTU-CVE-2026-110716 |
| Ubuntu:24.04:LTS | unshield | no fix listed | UBUNTU-CVE-2026-110716 |
| Ubuntu:26.04:LTS | unshield | no fix listed | UBUNTU-CVE-2026-110716 |
| Ubuntu:26.10 | unshield | no fix listed | UBUNTU-CVE-2026-110716 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://hackmd.io/@haind-pwn/unshield-header-filetable-oob-read technical-description, exploit
- https://github.com/twogood/unshield/blob/51de441ba6893f11026d4671ccef9e8e2a4634fa/lib/libunshield.c#L195 technical-description
- https://github.com/twogood/unshield product
- VulnCheck Advisory: unshield through 1.6.2 Heap Out-of-Bounds Read via unshield_get_file_table third-party-advisory