CVE-2007-0464: The _CFNetConnectionWillEnqueueRequests function in CFNetwork 129.19 on Apple Mac OS X 10.4 through 10.4.10 al

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MEDIUM 5.0DOWNGRADE

CVE-2007-0464 is a medium-severity flaw (CVSS 5.0) affecting cfnetwork. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The _CFNetConnectionWillEnqueueRequests function in CFNetwork 129.19 on Apple Mac OS X 10.4 through 10.4.10 allows remote attackers to cause a denial of service (application crash) via a crafted HTTP 301 response, which results in a NULL pointer dereference.

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	15.2% (top 3%)
CISA exploited list	No
Weakness	CWE-119
Published	2007-01-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cfnetwork

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-01-30 17:28 UTCPublished CVE record published
2026-06-16 22:35 UTCUpdated Record last modified

cfnetwork cfnetwork DOWNGRADE

Affected: 129.19

Fixed in: no fixed release known

Safe to downgrade to: a release before 129.19

1. Check installed version

apt-cache policy cfnetwork || rpm -q cfnetwork || cfnetwork --version

2. No fixed release: DOWNGRADE to a release before 129.19 (Debian / Ubuntu)

apt-cache madison cfnetwork sudo apt install cfnetwork=<VERSION_BEFORE_129.19> sudo apt-mark hold cfnetwork

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cfnetwork sudo dnf downgrade cfnetwork-<VERSION_BEFORE_129.19> sudo dnf versionlock add cfnetwork

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Apple CFNetwork - HTTP Response Denial of Service

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2007-0464?

cfnetwork: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-0464 being exploited?

CVE-2007-0464 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2007-0464 affect?

CVE-2007-0464 affects cfnetwork. Severity is medium (CVSS 5.0). The _CFNetConnectionWillEnqueueRequests function in CFNetwork 129.19 on Apple Mac OS X 10.4 through 10.4.10 allows remote attackers to cause a denial of service (application crash) via a crafted HTTP 301 response, which results in a NULL po

How urgent is CVE-2007-0464?

Priority 47/100. EPSS top 3%: very likely to be exploited; Public exploit reference

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References

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