Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck
CVE-2026-110603LASzip through 3.5.0 Invalid Free via Truncated VLR Header in laszip_read_header
Medium 6.3
In plain English
A medium-severity security flaw in LASzip from rapidlasso. 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 7% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.2%top 93.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | laszip | no fix listed | DEBIAN-CVE-2026-110603 |
| Debian:14 | laszip | no fix listed | DEBIAN-CVE-2026-110603 |
| Ubuntu:22.04:LTS | laszip | no fix listed | UBUNTU-CVE-2026-110603 |
| Ubuntu:24.04:LTS | laszip | no fix listed | UBUNTU-CVE-2026-110603 |
| Ubuntu:26.04:LTS | laszip | no fix listed | UBUNTU-CVE-2026-110603 |
| Ubuntu:26.10 | laszip | no fix listed | UBUNTU-CVE-2026-110603 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| rapidlasso | LASzip | 0 – through 3.5.0 |
Weakness: CWE-824 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
References
- https://github.com/LASzip/LASzip/commit/c9bfd3e68d65c84d513a2286ae06cbbe17afda02 patch
- https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L3967-L3995 technical-description
- https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L497-L511 technical-description
- https://hackmd.io/@haind-pwn/laszip-vlr-uninitialized-free third-party-advisory
- VulnCheck Advisory: LASzip through 3.5.0 Invalid Free via Truncated VLR Header in laszip_read_header third-party-advisory