CVE•Published 2026-08-17•Modified 2026-09-01•1 article on news•5 live references•NVD data

CVE-2026-74900Jahlives · Openssl_encrypt

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 74% of all CVEs

Weaknesses (CWE)

CWE-391Unchecked Error Condition

Description

openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from only 16 bytes of the private key and publicly available encapsulated key data. Attackers who obtain 16 bytes of the private key can compute the shared secret and decrypt all ciphertext, as the fallback triggers on any KEM failure without raising an error.

Timeline

Published 2026-08-17

Modified 2026-09-01

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-74900

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Jahlives Openssl Encrypt"

All exposed Jahlives Openssl Encrypt instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Openssl Encrypt"

HTTP body or banner mentions "Openssl Encrypt" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-74900