November 14, 2026

CVE Watchtower

CVE-2026-82486SiteServer SSCMS Improper Access Control

NVD

Vulnerability Summary

A vulnerability was found in SiteServer SSCMS 7.4.0. Affected by this issue is some unknown functionality of the component Agent Installation Workflow. Performing a manipulation of the argument SecurityKey results in improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitation is known to be difficult. The project was informed of the problem early through an issue report but has not responded yet.
Severity Level
MEDIUM(5.0)
Published Date
Aug 30, 2026
Last Modified
Aug 31, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.33%Probability
Root Weakness (CWE)
CWE-284: Improper Access Control β†—
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-266 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 2.3 (LOW)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsNone
Privileges RequiredNone
User InteractionPassive
Confidentiality (Vulnerable System)Low
Integrity (Vulnerable System)Low
Availability (Vulnerable System)Low
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 5.0)
CVSS v3.1 Base Metrics — Score 5.0 (MEDIUM)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

Affected & Patched Versions

Affected Versions
  • SiteServer SSCMS 7.4.0
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run SiteServer SSCMS and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Aug 30, 2026Published
  • Aug 31, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

Get notified about new SiteServer SSCMS CVEsYou are reading CVE-2026-82486. Get an email when KEV listings, exploits or new CVEs match your stack.
Set up CVE alerts

More SiteServer SSCMS CVEs

External References

Data last checked: Nov 14, 2026 01:09 UTC