CVE-2013-2220: Buffer overflow in the radius_get_vendor_attr function in the Radius extension before 1.2.7 for PHP allows rem

Q: How do I fix CVE-2013-2220?

radius: upgrade to newer than 1.2.6. Exact commands for each OS are on this page.

Q: Is CVE-2013-2220 being exploited?

CVE-2013-2220 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2013-2220 affect?

CVE-2013-2220 affects radius. Severity is high (CVSS 7.5). Buffer overflow in the radius_get_vendor_attr function in the Radius extension before 1.2.7 for PHP allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large Vendor Specific Attributes (VSA

Q: How urgent is CVE-2013-2220?

Priority 54/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2013-2220 is a high-severity flaw (CVSS 7.5) affecting radius. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the radius_get_vendor_attr function in the Radius extension before 1.2.7 for PHP allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large Vendor Specific Attributes (VSA) length value.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-07-31
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: radius extension project

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

Am I affected?

Timeline

2013-07-31 13:20 UTCPublished CVE record published
2026-06-16 23:52 UTCUpdated Record last modified

radius extension project radius UPGRADE

Affected: <= 1.2.6 · 1.1 · 1.2.1 · 1.2.2 · 1.2.3 · 1.2.4 · 1.2.5

Fixed in: newer than 1.2.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.2.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade radius

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade radius

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2013-2220?

radius: upgrade to newer than 1.2.6. Exact commands for each OS are on this page.

Is CVE-2013-2220 being exploited?

CVE-2013-2220 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-2013-2220 affect?

CVE-2013-2220 affects radius. Severity is high (CVSS 7.5). Buffer overflow in the radius_get_vendor_attr function in the Radius extension before 1.2.7 for PHP allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large Vendor Specific Attributes (VSA

How urgent is CVE-2013-2220?

Priority 54/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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