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CVE-2012-4619

24
FAUCET Score

CVE-2012-4619 describes a denial-of-service vulnerability in the NAT implementation of Cisco IOS versions 12.2, 12.4, and 15.0 through 15.2. An unauthenticated remote attacker can exploit this flaw by sending specially crafted transit IP packets, causing the affected device to reload. This vulnerability has a high severity CVSS score of 7.8, indicating a critical impact on availability with low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
12.4CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0:*:*:*:*:*:*:*
15.0\(1\)seCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)se:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:*

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
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 59th percentile among its peer group of 51,485 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

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-nat
Vendor Advisory
securityfocus.com / bid/55705
securitytracker.com / id