Vulnerability · CVE-2009-0321
Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http UR…
Published Jan 28, 2009 · catalog updated Jun 16, 2026 · Apple
Check if you run it
No confirmed exploitation is on record for CVE-2009-0321. EPSS is 2.36%. Act only if a listed version of Apple is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium4.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 2.36%
- Remediation
- Advisory link
- Affected products
- cpe apple/safari
Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe apple/safari3.2.1
How to fix CVE-2009-0321
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2009-0321. EPSS is 2.36%. Act only if a listed version of Apple is installed.
Which versions are affected?
Compare what you have installed with 3.2.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-59: Link Following. EPSS 2.36%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jan 28, 2009 · Apple Security Releases
Detected
Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.
Jun 16, 2026 · Apple Security Releases
Updated
Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.
Sources
- Apple Security ReleasesVendor advisoryCVE-2009-0321
Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.
nvd.nist.gov - CVE.orgVulnerability recordCVE-2009-0321
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2009-0321
30-day exploitation probability 2.36%
first.org - Exploit DatabasePublic exploit reference32761
Public exploit archive reference. This is not confirmation of exploitation. The exploit body is not stored here.
exploit-db.com
References
Freshness
Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.