Out-of-bounds Write Affecting nasa/CryptoLib package, versions [,1.4.3)
Threat Intelligence
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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- published10 Jan 2026
- disclosed10 Jan 2026
- creditUnknown
Introduced: 10 Jan 2026
CVE-2026-21897 (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 Out-of-bounds Write via the Crypto_Config_Add_Gvcid_Managed_Parameters function. An attacker can overwrite memory beyond the intended bounds by providing input that causes the function to write past the end of the gvcid_managed_parameters_array, potentially altering the value of gvcid_counter and affecting parameter lookup or registration logic.