CVE-2006-5601: Stack-based buffer overflow in the eap_do_notify function in eap.c in xsupplicant before 1.2.6, and possibly o

Q: How do I fix CVE-2006-5601?

xsupplicant: upgrade to newer than 1.2.5. Exact commands for each OS are on this page.

Q: Is CVE-2006-5601 being exploited?

CVE-2006-5601 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-2006-5601 affect?

CVE-2006-5601 affects xsupplicant. Severity is high (CVSS 9.0). Stack-based buffer overflow in the eap_do_notify function in eap.c in xsupplicant before 1.2.6, and possibly other versions, allows remote authenticated users to execute arbitrary code via unspecified vectors.

Q: How urgent is CVE-2006-5601?

Priority 54/100. Critical severity; EPSS top 9%: very likely to be exploited

This month

HIGH 9.0UPGRADE

CVE-2006-5601 is a high-severity flaw (CVSS 9.0) affecting xsupplicant. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the eap_do_notify function in eap.c in xsupplicant before 1.2.6, and possibly other versions, allows remote authenticated users to execute arbitrary code via unspecified vectors.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-119
Published	2006-10-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xsupplicant

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

Am I affected?

Timeline

2006-10-28 01:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

xsupplicant xsupplicant UPGRADE

Affected: <= 1.2.5 · 0.5 · 0.6 · 0.7 · 0.8 · 0.8b · 1.0 · 1.0.1

Fixed in: newer than 1.2.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.2.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xsupplicant

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-2006-5601?

xsupplicant: upgrade to newer than 1.2.5. Exact commands for each OS are on this page.

Is CVE-2006-5601 being exploited?

CVE-2006-5601 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-2006-5601 affect?

CVE-2006-5601 affects xsupplicant. Severity is high (CVSS 9.0). Stack-based buffer overflow in the eap_do_notify function in eap.c in xsupplicant before 1.2.6, and possibly other versions, allows remote authenticated users to execute arbitrary code via unspecified vectors.

How urgent is CVE-2006-5601?

Priority 54/100. Critical severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2006-5602 MEDIUM 4.0 UPGRADE Multiple memory leaks in xsupplicant before 1.2.6, and possibly other versions, allow attackers to cause a den

References

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