What’s Vulnerable › Vulnerabilities

CVE-2026-110603: LASzip through 3.5.0 Invalid Free via Truncated VLR Header in laszip_read_header

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-16
• Weakness: CWE-824

Description

LASzip through 3.5.0 contains an invalid free vulnerability in laszip_read_header() that allows attackers to free uninitialized heap pointers via truncated variable length record data. Attackers can supply a crafted LAS/LAZ file with an inflated VLR count that, when opened and destroyed through the C API, crashes the process and corrupts the heap.

Affected products

• rapidlasso LASzip: through 3.5.0

References

• https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L3967-L3995
• https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L497-L511
• https://github.com/LASzip/LASzip/commit/c9bfd3e68d65c84d513a2286ae06cbbe17afda02
• https://hackmd.io/@haind-pwn/laszip-vlr-uninitialized-free
• https://www.vulncheck.com/advisories/laszip-through-3.5.0-invalid-free-via-truncated-vlr-header-in-laszip-read-header

Get alerted when CVE-2026-110603 or the next vulnerability affects your stack