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CVE-2013-1241

17
FAUCET Score

CVE-2013-1241 describes a denial-of-service vulnerability affecting the ISM module in Cisco IOS on ISR G2 routers. Authenticated attackers can trigger a module reload by sending a series of malformed authentication-header packets. With a CVSS score of 6.3, this vulnerability is of medium severity, requiring network access and medium attack complexity to achieve a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:1921_integrated_services_router:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:1941_integrated_services_router:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:1941w_integrated_services_router:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:2901_integrated_services_router:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 70th percentile among its peer group of 1,428 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, 0.0 Mastodon, and 0.1 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/CiscoSecurityNotice/CVE-2013-1241
Vendor Advisory