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CVE-2026-22027

CryptoLib Vulnerable to Heap Buffer Overflow in MariaDB SA Hexstring Conversion

Published: Jan 10, 2026Updated: Jan 15, 2026 Sources: CVE List NVDCWE-122
NVD MITRE
6.0CVSSMEDIUM
EPSS Score
0.2%
Top 89.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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, the convert_hexstring_to_byte_array() function in the MariaDB SA interface writes decoded bytes into a caller-provided buffer without any capacity check. When importing SA fields from the database (e.g., IV, ARSN, ABM), a malformed or oversized hex string in the database can overflow the destination buffer, corrupting adjacent heap memory. This issue has been patched in version 1.4.3.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:UC:NI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-122

Affected Products

CryptoLibnasa
cryptolibnasa

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
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References

https://github.com/nasa/CryptoLib/security/advisories/GHSA-3m35-m689-h29x
github.com
https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821d
github.com
https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
github.com

Timeline

Published
Jan 10, 2026
Last Updated
Jan 15, 2026

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