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CVE-2026-21897

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 Crypto_Config_Add_Gvcid_Managed_Parameters function only checks whether gvcid_counter > GVCID_MAN_PARAM_SIZE. As a result, it allows up to the 251st entry, which causes a write past the end of the array, overwriting gvcid_counter located imm
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b675f5ee1bc23389f4a2e97fc083867d6054769bcb759c9fdd1bcd8c24c70dbe
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"CryptoLib","vendor":"nasa","versions":[{"status":"affected","version":"< 1.4.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:073fe3c43468014df052a5fafce66bb9913ff4cf68bbd32181265f6311593f9f · sha256:50c6d8d4c11d8377… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:073fe3c43468014df052a5fafce66bb9913ff4cf68bbd32181265f6311593f9f · sha256:50c6d8d4c11d8377… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:073fe3c43468014df052a5fafce66bb9913ff4cf68bbd32181265f6311593f9f · sha256:50c6d8d4c11d8377… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/nasa/CryptoLib/releases/tag/v1.4.3","tags":["x_refsource_MISC"],"url":"https://github.com/nasa/CryptoLib/releases/tag/v1.4.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:073fe3c43468014df052a5fafce66bb9913ff4cf68bbd32181265f6311593f9f · sha256:50c6d8d4c11d8377… · /containers/cna/references/1
{"name":"https://github.com/nasa/CryptoLib/security/advisories/GHSA-9x7j-gx23-7m5r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nasa/CryptoLib/security/advisories/GHSA-9x7j-gx23-7m5r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:073fe3c43468014df052a5fafce66bb9913ff4cf68bbd32181265f6311593f9f · sha256:50c6d8d4c11d8377… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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