Vulnerability in Rapidlasso Laszip
CVE-2026-110603
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.
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/LASzip/LASzip/commit/c9bfd3e68d65c84d513a2286ae06cbbe17afda02 (patch)
- github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp (technical-description)
- github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp (technical-description)
- hackmd.io/@haind-pwn/laszip-vlr-uninitialized-free (third-party-advisory)
- www.vulncheck.com/advisories/laszip-through-3.5.0-invalid-free-via-truncated-vl… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110603?
- CVE-2026-110603 is a medium-severity vulnerability in Rapidlasso Laszip, classified under Access of Uninitialized Pointer. CVSS score: 6.3/10. Published 2026-10-14.
- How severe is CVE-2026-110603?
- Medium severity. CVSS v3 base score is 6.3 out of 10.