Heap-based Buffer Overflow Affecting nasa/CryptoLib package, versions [,1.4.3)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-NASACRYPTOLIB-14912429
- published10 Jan 2026
- disclosed10 Jan 2026
- creditUnknown
Introduced: 10 Jan 2026
CVE-2026-22027 (opens in a new tab)How to fix?
Upgrade nasa/CryptoLib to version 1.4.3 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the convert_hexstring_to_byte_array function. An attacker can corrupt adjacent heap memory by supplying a malformed or oversized hex string when importing SA fields from the database.