CVE-2001-1377

Multiple RADIUS implementations do not properly validate the Vendor-Length of the Vendor-Specific attribute, which allows remote attackers to cause a denial of service (crash) via a Vendor-Length that is less than 2.

Published: 2002-03-04 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1377 is rated Moderate Risk (47.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.42%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-1377

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 13.34% 5.42% -7.91%
2 2026-01-01 10.28% 13.34% +3.06%
3 2025-03-30 — 10.28% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1377

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2001-1377

OS Trackers for CVE-2001-1377

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2001-1377

Affected software / configurations for CVE-2001-1377

Vendor Product Version Raw CPE
freeradius freeradius 0.2 cpe:2.3:a:freeradius:freeradius:0.2:*:*:*:*:*:*:*
freeradius freeradius 0.3 cpe:2.3:a:freeradius:freeradius:0.3:*:*:*:*:*:*:*
gnu radius 0.92.1 cpe:2.3:a:gnu:radius:0.92.1:*:*:*:*:*:*:*
gnu radius 0.93 cpe:2.3:a:gnu:radius:0.93:*:*:*:*:*:*:*
gnu radius 0.94 cpe:2.3:a:gnu:radius:0.94:*:*:*:*:*:*:*
gnu radius 0.95 cpe:2.3:a:gnu:radius:0.95:*:*:*:*:*:*:*
icradius icradius 0.14 cpe:2.3:a:icradius:icradius:0.14:*:*:*:*:*:*:*
icradius icradius 0.15 cpe:2.3:a:icradius:icradius:0.15:*:*:*:*:*:*:*
icradius icradius 0.16 cpe:2.3:a:icradius:icradius:0.16:*:*:*:*:*:*:*
icradius icradius 0.17 cpe:2.3:a:icradius:icradius:0.17:*:*:*:*:*:*:*
icradius icradius 0.17b cpe:2.3:a:icradius:icradius:0.17b:*:*:*:*:*:*:*
icradius icradius 0.18 cpe:2.3:a:icradius:icradius:0.18:*:*:*:*:*:*:*
icradius icradius 0.18.1 cpe:2.3:a:icradius:icradius:0.18.1:*:*:*:*:*:*:*
livingston radius 2.0 cpe:2.3:a:livingston:radius:2.0:*:*:*:*:*:*:*
livingston radius 2.0.1 cpe:2.3:a:livingston:radius:2.0.1:*:*:*:*:*:*:*
livingston radius 2.1 cpe:2.3:a:livingston:radius:2.1:*:*:*:*:*:*:*
lucent radius 2.0 cpe:2.3:a:lucent:radius:2.0:*:*:*:*:*:*:*
lucent radius 2.0.1 cpe:2.3:a:lucent:radius:2.0.1:*:*:*:*:*:*:*
lucent radius 2.1 cpe:2.3:a:lucent:radius:2.1:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6.1 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6.1:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6.2 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6.2:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6.3 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6.3:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6.4 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6.4:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6.5 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6.5:*:*:*:*:*:*:*
miquel_van_smoorenburg_cistron radius 1.6_.0 cpe:2.3:a:miquel_van_smoorenburg_cistron:radius:1.6_.0:*:*:*:*:*:*:*
openradius openradius 0.8 cpe:2.3:a:openradius:openradius:0.8:*:*:*:*:*:*:*
openradius openradius 0.9 cpe:2.3:a:openradius:openradius:0.9:*:*:*:*:*:*:*
openradius openradius 0.9.1 cpe:2.3:a:openradius:openradius:0.9.1:*:*:*:*:*:*:*
openradius openradius 0.9.2 cpe:2.3:a:openradius:openradius:0.9.2:*:*:*:*:*:*:*
openradius openradius 0.9.3 cpe:2.3:a:openradius:openradius:0.9.3:*:*:*:*:*:*:*
radiusclient radiusclient 0.3.1 cpe:2.3:a:radiusclient:radiusclient:0.3.1:*:*:*:*:*:*:*
xtradius xtradius 1.1_pre1 cpe:2.3:a:xtradius:xtradius:1.1_pre1:*:*:*:*:*:*:*
xtradius xtradius 1.1_pre2 cpe:2.3:a:xtradius:xtradius:1.1_pre2:*:*:*:*:*:*:*
yard_radius yard_radius 1.0.17 cpe:2.3:a:yard_radius:yard_radius:1.0.17:*:*:*:*:*:*:*
yard_radius yard_radius 1.0.18 cpe:2.3:a:yard_radius:yard_radius:1.0.18:*:*:*:*:*:*:*
yard_radius yard_radius 1.0.19 cpe:2.3:a:yard_radius:yard_radius:1.0.19:*:*:*:*:*:*:*
yard_radius yard_radius 1.0_pre13 cpe:2.3:a:yard_radius:yard_radius:1.0_pre13:*:*:*:*:*:*:*
yard_radius yard_radius 1.0_pre14 cpe:2.3:a:yard_radius:yard_radius:1.0_pre14:*:*:*:*:*:*:*
yard_radius yard_radius 1.0_pre15 cpe:2.3:a:yard_radius:yard_radius:1.0_pre15:*:*:*:*:*:*:*
yard_radius_project yard_radius 1.0.16 cpe:2.3:a:yard_radius_project:yard_radius:1.0.16:*:*:*:*:*:*:*

References for CVE-2001-1377

cvelogic Threat Intelligence