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CVE-2001-1377

21
FAUCET Score

CVE-2001-1377 describes a denial-of-service vulnerability affecting multiple RADIUS implementations, including FreeRADIUS, GNU, and Lucent products. The flaw stems from insufficient validation of the Vendor-Length field within the Vendor-Specific attribute, allowing remote attackers to crash the server by providing a Vendor-Length value less than 2. This vulnerability has a CVSS score of 5.0 (Medium), indicating it can be exploited remotely with low complexity to achieve a partial denial of service. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the CVE has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
0.2CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:0.3:*:*:*:*:*:*:*
0.92.1CPE matchmatch criteria
cpe:2.3:a:gnu:radius:0.92.1:*:*:*:*:*:*:*
0.93CPE matchmatch criteria
cpe:2.3:a:gnu:radius:0.93:*:*:*:*:*:*:*
0.94CPE matchmatch criteria
cpe:2.3:a:gnu:radius:0.94:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
5.42%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0542 is in the 89th percentile among its peer group of 23,701 CVEs.

Social Chatter

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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Powertools 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Powertools 7.1
View patch

Vendor Advisories (1)

redhatCVE-2001-1377

security flaw

Nov 13, 2001

References

ftp.freebsd.org / pub/FreeBSD/CERT/advisories/FreeBSD-SN-02:02.asc
archives.neohapsis.com / archives/linux/suse/2002-q2/0362.html
distro.conectiva.com.br / atualizacoes
marc.info
cert.org / advisories/CA-2002-06.html
PatchThird Party AdvisoryUS Government Resource
iss.net / security_center/static/8354.php
PatchVendor Advisory
kb.cert.org / vuls/id/936683
PatchThird Party AdvisoryUS Government Resource
redhat.com / support/errata/RHSA-2002-030.html
securityfocus.com / bid/4230
PatchVendor Advisory