CVE-2026-22027

MEDIUM EPSS 11.1%
Published Jan 10, 20265mo ago · Modified Jun 17, 20261w ago
5.7 CVSS 4.0
Medium
Find Similar
Published Jan 10, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
5.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
11.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-122

Affected Products 1

VendorProductVersionRange
nasacryptolib* <1.4.3

References 3

  • github.com https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821d
    Patch
  • github.com https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
    Release Notes
  • github.com https://github.com/nasa/CryptoLib/security/advisories/GHSA-3m35-m689-h29x
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821d
    Patch