CVE-2007-6422

4.0 MEDIUM 10% exploit odds Fix listed Denial of service Library

What it is

The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6, when a threaded Multi-Processing Module is used, allows remote authenticated users to cause a denial of service (child process crash) via an invalid bb variable.

At a glance

Exploitability: Can be exploited over the network with a login. Limited direct impact.
Exploit odds: 10.0% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2008-01-08 18:46 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:48 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 10.0% in the next 30 days (EPSS).
Severity: 4.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2008-01-08 18:46 UTC
Last modified: 2026-06-16 22:48 UTC
Exploit probability: 10.0% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Apache Http Server
Apache Http Server 2.2
Apache Http Server 2.2.1
Apache Http Server 2.2.2
Apache Http Server 2.2.3
Apache Http Server 2.2.4
Apache Http Server 2.2.6

Attack profile CVSS 2.0 · 4.0

Attack vector: Network
Complexity: Low
Authentication: Single
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2007-6422.md and follow it. Check whether this project is affected by CVE-2007-6422. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record