CVE-2026-3518

Description

OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in the 'killsession' command

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CVSS v3.1 Score

8.4

HIGH

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

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-77 CWE-77

Affected Products

Vendor	Product	Versions
progress	connection_manager_for_objectscale	< 7.2.63.1
progress	ecs_connection_manager	< 7.2.63.1
progress	loadmaster	< 7.2.54.17
progress	loadmaster	< 7.2.63.1

References

Advisories & Patches

https://community.progress.com/s/article/LoadMaster-Security-Vulnerabilites-CVE-2026-3517-CVE-2026-3518-CVE-2026-3519-CVE-2026-4048-CVE-2026-21876

Frequently Asked Questions

What is CVE-2026-3518? +

OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in the 'killsession' command It has a CVSS v3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-3518? +

CVE-2026-3518 has a CVSS v3.1 score of 8.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-3518? +

CVE-2026-3518 affects products from progress, specifically: connection_manager_for_objectscale, ecs_connection_manager, loadmaster. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-3518? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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