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CVE-2001-0757

20
FAUCET Score

CVE-2001-0757 describes a critical vulnerability in the Cisco 6400 Access Concentrator Node Route Processor 2 (NRP2) 12.1DC card, where the device fails to properly disable Telnet access when vty passwords are not configured. This oversight allows remote, unauthenticated attackers to gain unauthorized access to the system. With a CVSS score of 7.5 (HIGH), the vulnerability is easily exploitable over the network with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the inherent risk remains due to the ease of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
12.1dcCPE matchmatch criteria
cpe:2.3:h:cisco:6400_nrp_2:12.1dc:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 70th percentile among its peer group of 51,506 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/6691
ciac.org / ciac/bulletins/l-097.shtml
cisco.com / warp/public/707/6400-nrp2-telnet-vuln-pub.shtml
PatchVendor Advisory
kb.cert.org / vuls/id/516659
US Government Resource
osvdb.org / 804
securityfocus.com / bid/2874
ExploitPatchVendor Advisory