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CVE-2010-0577

19
FAUCET Score

CVE-2010-0577 is a denial-of-service vulnerability affecting Cisco IOS versions 12.2 through 12.4, specifically when certain PMTUD, SNAT, or window-size configurations are enabled. Remote attackers can trigger an infinite loop, leading to device reloads or hangs, by sending a crafted TCP segment. The 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, or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
12.2bCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:*
12.2bcCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2bc:*:*:*:*:*:*:*
12.2bxCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2bx:*:*:*:*:*:*:*
12.2byCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2by:*:*:*:*:*:*:*
12.2bzCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2bz:*:*:*:*:*:*:*

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
2.53%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0253 is in the 40th 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

Remediation records are not available for this CVE.

References

osvdb.org / 63178
secunia.com / advisories/39078
exchange.xforce.ibmcloud.com / vulnerabilities/57129
cisco.com / en/US/products/products_security_advisory09186a0080b20f34.shtml
PatchVendor Advisory
securityfocus.com / bid/38930
securitytracker.com / id
vupen.com / english/advisories/2010/0703