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CVE-2001-0851

16
FAUCET Score

CVE-2001-0851 describes a vulnerability in Linux kernel versions 2.0, 2.2, and 2.4, specifically when syncookies are enabled, affecting products like Caldera and SUSE. This flaw allows remote attackers to bypass firewall rules by brute-force guessing the cookie. Rated Medium with a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N), it indicates a network-based attack with low complexity, potentially leading to information disclosure. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.1CPE matchmatch criteria
cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*
3.1CPE matchmatch criteria
cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:o:caldera:openlinux:2.3:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:o:caldera:openlinux_edesktop:2.4:*:*:*:*:*:*:*
2.3.1CPE matchmatch criteria
cpe:2.3:o:caldera:openlinux_eserver:2.3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.09%
Probability of exploitation in next 30 days
EPSS Percentile
86.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0309 is in the 81st percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Linux 6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.2
View patch

Vendor Advisories (1)

redhatCVE-2001-0851Important

security flaw

Nov 2, 2001

References

distro.conectiva.com.br / atualizacoes
exchange.xforce.ibmcloud.com / vulnerabilities/7461
caldera.com / support/security/advisories/CSSA-2001-038.0.txt
PatchVendor Advisory
linux-mandrake.com / en/security/2001/MDKSA-2001-082.php3
linuxsecurity.com / advisories/other_advisory-1683.html
PatchVendor Advisory
novell.com / linux/security/advisories/2001_039_kernel2_txt.html
redhat.com / support/errata/RHSA-2001-142.html