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CVE

CVE-2026-21898

CryptoLib Has Out-of-bounds Read in Crypto_AOS_ProcessSecurity
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CVE

CVE-2026-21898

CryptoLib Has Out-of-bounds Read in Crypto_AOS_ProcessSecurity

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 CryptoAOSProcessSecurity function reads memory without valid bounds checking when parsing AOS frame hashes. This issue has been patched in version 1.4.3.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21898.json, https://github.com/nasa/CryptoLib/releases/tag/v1.4.3, https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853, https://nvd.nist.gov/vuln/detail/CVE-2026-21898

Severity

8.2

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.2
EPSS Probability
0.0003%
EPSS Percentile
0.0837%
Introduced Version
0
Fix Available
9ffda0ff78e8f74c58db4c181923196870e04c3e

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