CVE-2022-4639

Name: CVE-2022-4639
Creator: NVD / NIST
Published: 2022-12-21T22:15:08.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2022-4639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability, which was classified as critical, has been found in sslh. This issue affects the function hexdump of the file probe.c of the component Packet Dumping Handler. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

A vulnerability, which was classified as critical, has been found in sslh. This issue affects the function hexdump of the file probe.c of the component Packet Dumping Handler. The manipulation of the argument msg_info leads to format string. The attack may be initiated remotely. The name of the patch is b19f8a6046b080e4c2e28354a58556bb26040c6f. It is recommended to apply a patch to fix this issue. The identifier VDB-216497 was assigned to this vulnerability.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.86%

53.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Sslh Project	Sslh	2.0	Rc1

References

https://github.com/yrutschle/sslh/commit/b19f8a6046b080e4c2e28354a58556bb26040c6fPatch, Third Party Advisory
https://github.com/yrutschle/sslh/pull/353Patch, Third Party Advisory
https://vuldb.com/?id.216497Third Party Advisory
https://github.com/yrutschle/sslh/commit/b19f8a6046b080e4c2e28354a58556bb26040c6fPatch, Third Party Advisory
https://github.com/yrutschle/sslh/pull/353Patch, Third Party Advisory
https://vuldb.com/?id.216497Third Party Advisory

Timeline

Published: Dec 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-4639?

How severe is CVE-2022-4639?

CVE-2022-4639 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2022-4639?

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.

Are you affected by CVE-2022-4639?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST