When was CVE-2001-0851 disclosed?

CVE-2001-0851 was first published in the National Vulnerability Database on December 6, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2001-0851 actively exploited?

CVE-2001-0851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-0851?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0851, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2001-0851

NONECVSS 0.0

0.0

Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass firewall rules by brute force guessing the cookie.

CVSS v3: —
EG Score: —
EPSS: 70.5%
KEV: Not listed

References (14)

cve@mitrehttp://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000432
cve@mitrehttp://www.caldera.com/support/security/advisories/CSSA-2001-038.0.txt
cve@mitrehttp://www.linux-mandrake.com/en/security/2001/MDKSA-2001-082.php3
cve@mitrehttp://www.linuxsecurity.com/advisories/other_advisory-1683.html
cve@mitrehttp://www.novell.com/linux/security/advisories/2001_039_kernel2_txt.html
cve@mitrehttp://www.redhat.com/support/errata/RHSA-2001-142.html
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/7461
af854a3a-2127-422b-91ae-364da2661108http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000432
af854a3a-2127-422b-91ae-364da2661108http://www.caldera.com/support/security/advisories/CSSA-2001-038.0.txt
af854a3a-2127-422b-91ae-364da2661108http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-082.php3
af854a3a-2127-422b-91ae-364da2661108http://www.linuxsecurity.com/advisories/other_advisory-1683.html
af854a3a-2127-422b-91ae-364da2661108http://www.novell.com/linux/security/advisories/2001_039_kernel2_txt.html
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2001-142.html
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/7461

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CVE-2001-0851

Published

Last Modified

References (14)

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2001-0851?

CVE-2001-0851

📅 Published

🔄 Last Modified

🔗 References (14)

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2001-0851?

Published

Last Modified

References (14)

Frequently asked(4)