CVE-2026-22026: nasa cryptolib

Vulnerability summary

CVE-2026-22026 is a high (CVSS 8.2) vulnerability in nasa cryptolib. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 10-01-2026
   PublishedVulnerability first disclosed.
2. 13-01-2026
   Last modifiedVulnerability information updated.

Description

CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, the libcurl write_callback function in the KMC crypto service client allows unbounded memory growth by reallocating response buffers without any size limit or overflow check. A malicious KMC server can return arbitrarily large HTTP responses, forcing the client to allocate excessive memory until the process is terminated by the OS. This issue has been patched in version 1.4.3.

• CWE-789Memory Allocation with Excessive Size ValueThe product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.