AUGUST 4, 2026
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Case File

CVE-2021-40528

MEDIUM · CVSS 5.9 EPSS 1.42%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-06 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. See the original NVD description below for full technical details.

CVE
CVE-2021-40528
Severity
MEDIUM
CVSS
5.9
EPSS
1.42%

Original NVD Description

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

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