PT-2026-33762 · Progress · Loadmaster

Michael Argany · Published 2026-04-20 · Updated 2026-05-21 · CVE-2026-3518

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Progress ADC Products (affected versions not specified)

Description An OS command injection flaw allows an authenticated attacker with "All" permissions to execute arbitrary commands on the LoadMaster appliance. This occurs due to unsanitized input in the 'killsession' command within the API and during the file upload process for custom WAF (Web Application Firewall) rule files in the UI.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-3518

ZDI-26-318

Affected Products

Loadmaster

References · 7

• https://zerodayinitiative.com/advisories/ZDI-26-318 · Security Note
• https://community.progress.com/s/article/LoadMaster-Security-Vulnerabilites-CVE-2026-3517-CVE-2026-3518-CVE-2026-3519-CVE-2026-4048-CVE-2026-21876 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3518 · Security Note
• https://t.me/cveNotify/161783 · Telegram Post
• https://t.me/cveNotify/161796 · Telegram Post
• https://t.me/cveNotify/161795 · Telegram Post
• https://t.me/cveNotify/161797 · Telegram Post