Memory Vulnerability in CryptoLib Affecting NASA's cFS Communication
CVE-2026-22026

8.2HIGH

Key Information:

Vendor

Nasa

Status
Cryptolib
Vendor
CVE Published:
10 January 2026

What is CVE-2026-22026?

CryptoLib, utilized in securing communications between NASA's core Flight System (cFS) and ground stations, contains a vulnerability in the libcurl write_callback function of the KMC crypto service client. This issue allows a malicious KMC server to exploit the client through excessively large HTTP responses, leading to unbounded memory growth as the client reallocates response buffers without constraints. This flaw can cause the process to consume all available memory, ultimately resulting in termination by the operating system. Users are advised to upgrade to version 1.4.3, which addresses this security issue.

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Affected Version(s)

CryptoLib < 1.4.3

References

https://github.com/nasa/CryptoLib/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb22...
x_refsource_MISC
https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
x_refsource_MISC

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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