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CVE-2025-40552

74
FAUCET Score

CVE-2025-40552 is a critical authentication bypass vulnerability affecting SolarWinds Web Help Desk, allowing unauthenticated attackers to execute protected actions. With a CVSS score of 9.8, this flaw is easily exploitable over the network without user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not yet listed on the KEV catalog, community discussion and media coverage indicate active exploitation and the existence of exploit code, including Nuclei patterns and mentions of pre-auth RCE chains. Organizations using SolarWinds Web Help Desk should prioritize patching immediately.

Impacted Technologies

VendorProductVersion(s)CPE
< 2026.1CPE matchmatch criteria
cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
49.73%
Probability of exploitation in next 30 days
EPSS Percentile
98.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2025-40552 · Feb 26, 2026
This CVE's current EPSS score of 0.4973 is in the 96th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

applepatch availablevia llm_extracted
Fixed in: 2026.1

Vendor Advisories (1)

applellm-apple-b35c5ca88c0c376eCRITICAL

SolarWinds Web Help Desk Authentication Bypass Vulnerability

Jan 28, 2026

References

github.com / watchtowrlabs/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553/blob/main/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553.py
documentation.solarwinds.com / en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
Release Notes
solarwinds.com / trust-center/security-advisories/CVE-2025-40552
Vendor Advisory