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CVE-2001-0864

19
FAUCET Score

CVE-2001-0864 describes a vulnerability in Cisco 12000 routers running IOS 12.0 with Engine 2 line cards. Specifically, it involves a flaw in how the router handles an implicit "deny ip any any" rule within an outgoing Access Control List (ACL) when that ACL contains exactly 448 entries, potentially allowing some packets to bypass intended access restrictions. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a significant risk. It is remotely exploitable with low attack complexity, and successful exploitation could lead to partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit, Nuclei, or ExploitDB. Furthermore, there is no recorded community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:cisco:12000_router:*:*:*:*:*:*:*:*

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
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 50th percentile among its peer group of 51,553 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/7553
ciac.org / ciac/bulletins/m-018.shtml
cisco.com / warp/public/707/GSR-ACL-pub.shtml
PatchVendor Advisory
osvdb.org / 1986
securityfocus.com / bid/3536