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CVE-2009-2873

19
FAUCET Score

CVE-2009-2873 describes a denial-of-service vulnerability affecting Cisco IOS versions 12.0 through 12.4 when IP-based tunnels and Cisco Express Forwarding are enabled. Remote attackers can trigger a device reload by sending malformed packets. This vulnerability has a CVSS score of 7.1, indicating high severity due to its network-based attack vector, medium attack complexity, and complete availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
12.0daCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0da:*:*:*:*:*:*:*
12.0dbCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0db:*:*:*:*:*:*:*
12.0dcCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0dc:*:*:*:*:*:*:*
12.0sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0s:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 32nd percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

osvdb.org / 58334
tools.cisco.com / security/center/viewAlert.x
PatchVendor Advisory
cisco.com / en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html
PatchVendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080af8115.shtml
PatchVendor Advisory
cisco.com / web/about/security/intelligence/Cisco_ERP_sep09.html
Vendor Advisory
securitytracker.com / id
vupen.com / english/advisories/2009/2759