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CVE-2008-3806

25
FAUCET Score

CVE-2008-3806 describes a denial-of-service vulnerability affecting Cisco IOS versions 12.0 through 12.4 on specific Cisco 10000, uBR10012, and uBR7200 series devices. Remote attackers can exploit this by sending crafted UDP packets to internal 127.0.0.0/8 addresses, causing a device or linecard reload. This vulnerability carries a high CVSS score of 8.5, indicating a severe impact (complete availability loss) with low attack complexity and no authentication required. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.0sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0s:*:*:*:*:*:*:*
12.0slCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0sl:*:*:*:*:*:*:*
12.0stCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0st:*:*:*:*:*:*:*
12.2sbCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2sb:*:*:*:*:*:*:*
12.2scaCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2sca:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.5HIGH

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
7.8
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.14%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0314 is in the 76th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

secunia.com / advisories/31990
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/45592
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7123
Third Party Advisory
tools.cisco.com / security/center/viewAlert.x
Vendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080a014ae.shtml
Vendor Advisory