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CVE-2023-20066

18
FAUCET Score

CVE-2023-20066 is a directory traversal vulnerability in the web UI of Cisco IOS XE Software. An authenticated, remote attacker can exploit this due to insufficient security configuration. This allows read access to files outside the web UI's filesystem mountpoint, though writing to files is not possible. With a CVSS score of 6.5 (Medium), the attack requires authentication but has low complexity and high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
16.12.3CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:*
17.3.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.3.2:*:*:*:*:*:*:*
17.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.6.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.71%
Probability of exploitation in next 30 days
EPSS Percentile
75.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0171 is in the 88th percentile among its peer group of 21,958 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 0.0 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-webui-pthtrv-es7GSb9V
Vendor Advisory