CVE-2026-4942
published 2026-07-17CVE-2026-4942: IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to…
PriorityP346high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
0.25%
16.3th percentile
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configuration.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ibm | i | — | — |
| ibm | i | — | — |
| ibm | i | — | — |
| ibm | i | — | — |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
IBM i 7.3/7.4/7.5/7.6 Message Remote Code Execution
vuldb·2026-07-17·CVSS 5.9
CVE-2026-4942 [MEDIUM] IBM i 7.3/7.4/7.5/7.6 Message Remote Code Execution
A vulnerability labeled as critical has been found in IBM i 7.3/7.4/7.5/7.6. This affects an unknown part of the component Message Handler. Executing a manipulation can lead to Remote Code Execution.
This vulnerability is tracked as CVE-2026-4942. The attack can be launched remotely. No exploit exists.
GHSA
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configur
ghsa_unreviewed·2026-07-17
CVE-2026-4942 [MEDIUM] CWE-757 IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configur
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configuration.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-07-17
Published