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CVE-2020-3228

28
FAUCET Score

CVE-2020-3228 is a denial-of-service vulnerability in Cisco IOS, IOS XE, and NX-OS Software, specifically within the Security Group Tag Exchange Protocol (SXP). An unauthenticated, remote attacker can exploit this by sending specially crafted SXP packets, causing the affected device to reload. This vulnerability carries a high CVSS score of 8.6, indicating a network-based attack with low complexity and a high impact on availability. While the FAUCET Risk Score is 70/100, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
12.2\(6\)i1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(6\)i1:*:*:*:*:*:*:*
15.1\(1\)syCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.1\(1\)sy:*:*:*:*:*:*:*
15.1\(1\)sy1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.1\(1\)sy1:*:*:*:*:*:*:*
15.1\(1\)sy2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.1\(1\)sy2:*:*:*:*:*:*:*
15.1\(1\)sy3CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.1\(1\)sy3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
4.0
CvssVersion
3.0

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 51,551 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

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-sxp-68TEVzR
PatchVendor Advisory