VDB
CVE-2021-40530
CVE-2021-40530
PUBLISHED
Reported by mitre · Published September 6, 2021
The ElGamal implementation in Crypto++ through 8.5 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.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| n/a | n/a | * |
| arch | crypto++ | 0 |
Timeline
- Sep 6, 2021 CVE Published
- Sep 7, 2021 EPSS Score (30 in total, the first dated here)
- Aug 4, 2024 CVE Updated
- Apr 4, 2026 Security Advisory
- Jul 21, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-40530
vulnetix vdb fixes CVE-2021-40530Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-40530/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- x_refsource_MISC
- x_refsource_MISC
- x_refsource_MISC
- FEDORA-2021-8b14da0538 vendor-advisoryx_refsource_FEDORA
- FEDORA-2021-a381a721a9 vendor-advisoryx_refsource_FEDORA
- FEDORA-2021-6788250ea4 vendor-advisoryx_refsource_FEDORA