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CVE-2007-2688

21
FAUCET Score

CVE-2007-2688 describes a vulnerability in Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set, where improper handling of full-width and half-width Unicode character encodings allows remote attackers to evade detection of HTTP traffic. With a CVSS score of 7.8, this vulnerability is considered highly severe, requiring no authentication and having a low attack complexity, potentially leading to a complete compromise of availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:4.0:*:*:*:*:*:*:*
5.0\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:5.0\(1\):*:*:*:*:*:*:*
5.0\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:5.0\(2\):*:*:*:*:*:*:*
5.0\(6\)p1CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:5.0\(6\)p1:*:*:*:*:*:*:*
5.1\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:5.1\(1\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.00%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0300 is in the 75th percentile among its peer group of 51,466 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

secunia.com / advisories/25285
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/34277
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5465
cisco.com / en/US/products/products_security_response09186a008083f82e.html
gamasec.net / english/gs07-01.html
kb.cert.org / vuls/id/739224
US Government Resource
osvdb.org / 35336
securityfocus.com / archive/1/468633/100/0/threaded
securityfocus.com / bid/23980
securitytracker.com / id
securitytracker.com / id
vupen.com / english/advisories/2007/1803