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CVE-2023-33141

22
FAUCET Score

CVE-2023-33141 is a Denial of Service vulnerability affecting Microsoft's Yet Another Reverse Proxy (YARP). With a CVSS score of 7.5 (HIGH), this vulnerability can be exploited remotely with low attack complexity, leading to a complete denial of service without requiring user interaction or privileges. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in the KEV catalog, and community discussion and media coverage are minimal, indicating low active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 1.1.2CPE matchmatch criteria
cpe:2.3:a:microsoft:yet_another_reverse_proxy:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:yet_another_reverse_proxy:2.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0222 is in the 66th percentile among its peer group of 51,485 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

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 (5)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: YARP 1.0Fixed in: 1.1.2
View patch
microsoftpatch availablevia msrc
Product: YARP 2.0Fixed in: 2.0.1
View patch
nugetpatch availablevia ghsa
Product: Yarp.ReverseProxyFixed in: 1.1.2
nugetpatch availablevia ghsa
Product: Yarp.ReverseProxyFixed in: 2.0.1

Vendor Advisories (2)

nugetGHSA-jrjw-qgr2-wfcghigh

YARP Denial of Service Vulnerability

Jun 23, 2023
microsoft2023-Jun/CVE-2023-33141Important

Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability

Jun 13, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-33141
PatchVendor Advisory