CVE-2026-22025

CryptoLib Memory Leak on HTTP Error Response in KMC Client

LOW
3.7
CVSS Score
Published: January 10, 2026 at 12:20 AM UTC
Updated: June 17, 2026 at 10:19 AM UTC
1 product affected across 1 vendorCryptoLib

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Severity
LOW3.7
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

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, when the KMC server returns a non-200 HTTP status code, cryptography_encrypt() and cryptography_decrypt() return immediately without freeing previously allocated buffers. Each failed request leaks approximately 467 bytes. Repeated failures (from a malicious server or network issues) can gradually exhaust memory. This issue has been patched in version 1.4.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.4.3
Affected range stops below 1.4.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/nasa/CryptoLib/security/advisories/GHSA-h74x-vwwr-mm5g
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/nasa/CryptoLib/releases/tag/v1.4.3

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401CWE-770

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