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CVE-2022-20952

20
FAUCET Score

CVE-2022-20952 is a medium-severity vulnerability affecting Cisco AsyncOS Software for Cisco Secure Web Appliance (WSA), including models S195, S395, and S695. It allows an unauthenticated, remote attacker to bypass configured blocking rules due to improper detection of malformed, encoded traffic. The vulnerability has a CVSS score of 5.3, indicating a low impact on integrity and no impact on confidentiality or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.8, < 14.0.4CPE matchmatch criteria
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
14.5.0CPE matchmatch criteria
cpe:2.3:o:cisco:asyncos:14.5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 31st percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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-wsa-bypass-bwBfugek
Vendor Advisory