CryptoLib Has Out-of-bounds Read in Crypto_AOS_ProcessSecurity_CVE-2026-21898

8.2 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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 Crypto_AOS_ProcessSecurity function reads memory without valid bounds checking when parsing AOS frame hashes. This issue has been patched in version 1.4.3.

Basic Information

ID CVE-2026-21898

Source GitHub_M

Published Jan 10, 2026 at 00:10

Affected Product

Vendor nasa

Product CryptoLib

Version < 1.4.3

Affected Versions nasa CryptoLib < 1.4.3

CWE Classification

CWE-125

References

{
    "lastseen": "",
    "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 Crypto_AOS_ProcessSecurity function reads memory without valid bounds checking when parsing AOS frame hashes. This issue has been patched in version 1.4.3.",
    "published": "2026-01-10T00:10:29.925Z",
    "modified": "2026-01-10T00:10:29.925Z",
    "type": "cve",
    "title": "CryptoLib Has Out-of-bounds Read in Crypto_AOS_ProcessSecurity",
    "source": "GitHub_M",
    "references": "https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853\nhttps://github.com/nasa/CryptoLib/releases/tag/v1.4.3",
    "id": "CVE-2026-21898",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "nasa CryptoLib < 1.4.3",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "CryptoLib",
    "version": "< 1.4.3",
    "vendor": "nasa",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}