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CVE-2007-6422

16
FAUCET Score

CVE-2007-6422 describes a denial-of-service vulnerability in the balancer_handler function of mod_proxy_balancer in Apache HTTP Server versions 2.2.0 through 2.2.6, specifically when using a threaded Multi-Processing Module. An authenticated remote attacker can trigger a child process crash by supplying an invalid 'bb' variable. The vulnerability has a CVSS score of 4.0, indicating a low severity with network access, low attack complexity, requiring authentication, and resulting in partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:apache:http_server:-:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:apache:http_server:2.2:*:*:*:*:*:*:*
2.2.1CPE matchmatch criteria
cpe:2.3:a:apache:http_server:2.2.1:*:*:*:*:*:*:*
2.2.2CPE matchmatch criteria
cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:*
2.2.3CPE matchmatch criteria
cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.95%
Probability of exploitation in next 30 days
EPSS Percentile
95.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0995 is in the 99th percentile among its peer group of 21,974 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: httpd-0:2.2.3-11.el5_1.3
View patch

Vendor Advisories (1)

redhatCVE-2007-6422Low

httpd mod_proxy_balancer crash

Jan 1, 2008

References

httpd.apache.org / security/vulnerabilities_22.html
lists.opensuse.org / opensuse-security-announce/2008-04/msg00004.html
secunia.com / advisories/28526
Vendor Advisory
secunia.com / advisories/28749
Vendor Advisory
secunia.com / advisories/28977
Vendor Advisory
secunia.com / advisories/29348
Vendor Advisory
secunia.com / advisories/29640
Vendor Advisory
security.gentoo.org / glsa/glsa-200803-19.xml
securityreason.com / securityalert/3523
exchange.xforce.ibmcloud.com / vulnerabilities/39476
lists.apache.org / thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10181
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8690
redhat.com / archives/fedora-package-announce/2008-February/msg00541.html
redhat.com / archives/fedora-package-announce/2008-February/msg00562.html
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2008-0008.html
redhat.com / support/errata/RHSA-2008-0009.html
securityfocus.com / archive/1/486169/100/0/threaded
securityfocus.com / bid/27236
ubuntu.com / usn/usn-575-1
vupen.com / english/advisories/2008/0048
Vendor Advisory