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CVE-2023-20226

19
FAUCET Score

CVE-2023-20226 is a denial-of-service vulnerability affecting Cisco IOS XE Software with AppQoE or UTD enabled. An unauthenticated, remote attacker can exploit this by sending a crafted packet stream, causing the device to unexpectedly reload. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and high impact on availability. There is currently no public exploit code, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
17.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.7.1:*:*:*:*:*:*:*
17.7.1aCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.7.1a:*:*:*:*:*:*:*
17.7.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.7.2:*:*:*:*:*:*:*
17.8.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.8.1:*:*:*:*:*:*:*
17.8.1aCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.8.1a:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 26th percentile among its peer group of 51,551 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, 0.1 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

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-appqoe-utd-dos-p8O57p5y
Vendor Advisory