Out-of-bounds Read in Nasa Cryptolib
CVE-2026-22023
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, there is an out-of-bounds heap read vulnerability in cryptography_aead_encrypt(). This issue has been patched in version 1.4.3.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (41.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nasa Cryptolib — versions < 1.4.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-22023?
- CVE-2026-22023 is a high-severity vulnerability in Nasa Cryptolib, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-01-10.
- How severe is CVE-2026-22023?
- High severity. CVSS v3 base score is 7.5 out of 10.