CVE-2026-21897
- Source
- https://cve.org/CVERecord?id=CVE-2026-21897
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21897.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-21897
- Aliases
-
- GHSA-9x7j-gx23-7m5r
- Published
- 2026-01-10T00:07:16.920Z
- Modified
- 2026-01-17T05:39:54.580771Z
- Severity
-
- 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- CryptoLib Has Out-of-Bounds Write in Crypto_Config_Add_Gvcid_Managed_Parameters
- Details
-
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 CryptoConfigAddGvcidManagedParameters function only checks whether gvcidcounter > GVCIDMANPARAMSIZE. As a result, it allows up to the 251st entry, which causes a write past the end of the array, overwriting gvcidcounter located immediately after gvcidmanagedparametersarray[250]. This leads to an out-of-bounds write, and the overwritten gvcidcounter may become an arbitrary value, potentially affecting the parameter lookup/registration logic that relies on it. This issue has been patched in version 1.4.3.
- Database specific
{ "cwe_ids": [ "CWE-787" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21897.json", "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/nasa/cryptolib
Affected ranges
- Type
- GIT
- Repo
- https://github.com/nasa/cryptolib
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed