What’s Vulnerable › Vulnerabilities

CVE-2021-35243: HTTP PUT & DELETE Methods Enabled

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-23 · updated 2026-06-17
• Weakness: CWE-749

Description

The HTTP PUT and DELETE methods were enabled in the Web Help Desk web server (12.7.7 and earlier), allowing users to execute dangerous HTTP requests. The HTTP PUT method is normally used to upload data that is saved on the server with a user-supplied URL. While the DELETE method requests that the origin server removes the association between the target resource and its current functionality. Improper use of these methods may lead to a loss of integrity.

Affected products

• SolarWinds Web Help Desk: through 12.7.7

References

• https://support.solarwinds.com/SuccessCenter/s/article/Web-Help-Desk-12-7-7-Hotfix-1-Release-Notes?language=en_US
• https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35243
• https://support.solarwinds.com/SuccessCenter/s/article/Web-Help-Desk-12-7-7-Hotfix-1-Release-Notes?language=en_US
• https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35243

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