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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2026-21900

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, an out-of-bounds heap read vulnerability in cryptography_encrypt() occurs when parsing JSON metadata from KMC server responses. The flawed strtok iteration pattern uses ptr + strlen(ptr) + 1 which reads one byte past allocated buffer boundaries when processing short or malformed metadata strings. This issue has been patched in version 1.4.3.

CVSS 8.2 · HighBuzz score 18.9

Buzz score

Why this CVE is surfacing

Buzz score total 18.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 13.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
5.0
1 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
3 source links · newest first

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • 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…

    CVSS 8.2 · High
    3 mentions
  • CVE-2026-21899

    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…

    CVSS 4.7 · Medium
    2 mentions
  • CVE-2026-21898

    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…

    CVSS 8.2 · High
    2 mentions
  • CVE-2025-29913

    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…

    CVSS 8.9 · High
  • CVE-2024-44912

    NASA CryptoLib v1.3.0 was discovered to contain an Out-of-Bounds read via the TM subsystem (crypto_tm.c).

    CVSS 7.5 · High
  • CVE-2024-44911

    NASA CryptoLib v1.3.0 was discovered to contain an Out-of-Bounds read via the TC subsystem (crypto_tc.c).

    CVSS 7.5 · High