CVE-2026-4942
HIGHCVSS 7.5/10EPSS 0.25%
Last modified
CVE-2026-4942 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | I | 7.3 |
| Ibm | I | 7.4 |
| Ibm | I | 7.5 |
| Ibm | I | 7.6 |
References
- https://www.ibm.com/support/pages/node/7278992Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-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 a version disabled in the server configuration.
How severe is CVE-2026-4942?
CVE-2026-4942 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4942?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-49414The ELF image activator cleared per-process ASLR preference …7.8
- CVE-2026-49415During execve(2) of a SUID binary, the new virtual address s…8.8
- CVE-2026-49416The CONS_HISTORY ioctl handler did not adequately validate t…7.8
- CVE-2026-49417Second, the audio buffer backing a mapping could be freed wh…7
- CVE-2026-49418When msync(MS_INVALIDATE) is called on a mapping of an unman…8.8
- CVE-2026-49419When the JAIL_AT_DESC flag is specified, kern_jail_set() and…8.8
- CVE-2026-49420The RTSP handler in libalias rewrote outgoing packets into a…8.8
- CVE-2026-49421The kernel function that implements unlinkat(2) and funlinka…7.1
- CVE-2026-49422The RACK setsockopt(2) handler drops the connection lock in …8.4
- CVE-2026-49423When building the iovec array for a received TLS 1.2 CBC rec…3.3
- CVE-2026-49424The Linux waitid() implementation translates a FreeBSD sigin…5.5
- CVE-2026-49425The compat32 kevent() handler translates a 64-bit kevent str…5.5
Are you affected by CVE-2026-4942?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST