CVE-2026-110716

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.

CVSS 4.0

6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-14

Modified

2026-10-16

Record from

the NVD, synced 2026-10-19

References

• https://github.com/twogood/unshield
• https://github.com/twogood/unshield/blob/51de441ba6893f11026d4671ccef9e8e2a4634fa/lib/libunshield.c#L195
• https://hackmd.io/@haind-pwn/unshield-header-filetable-oob-read
• https://www.vulncheck.com/advisories/unshield-through-1.6.2-heap-out-of-bounds-read-via-unshield-get-file-table

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