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Public proof of conceptFix available

CVE-2018-12596

A public proof of concept exists; no exploitation attested.

  • Published2018-10-10
  • WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Episerver Ektron CMS before 9.0 SP3 Site CU 31, 9.1 before SP3 Site CU 45, or 9.2 before SP2 Site CU 22 allows remote attackers to call aspx pages via the "activateuser.aspx" page, even if a page is located under the /WorkArea/ path, which is forbidden (normally available exclusively for local admins).

Timeline

dates in UTC
  1. 2018-10-10Exploit-DB entryExploit-DB
  2. 2018-10-1021:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-12596?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-12596?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Episerver ektron cms
BranchAffectedFixed in
9.0= 9.00no fix published
9.10= 9.10no fix published
9.20= 9.20no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-45577
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedalt3kx/CVE-2018-12596
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.09.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-269read 2026-10-23
  • FIRST EPSSEPSS score22.4 %read 2026-11-02
  • PoC-in-GitHubproof of concept1read 2026-11-02
  • Exploit-DBdetectionread 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-10-10
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-12596?

Episerver Ektron CMS before 9.0 SP3 Site CU 31, 9.1 before SP3 Site CU 45, or 9.2 before SP2 Site CU 22 allows remote attackers to call aspx pages via the "activateuser.aspx" page, even if a page is located under the /WorkArea/ path, which is forbidden (normally available exclusively for local admins).

Is CVE-2018-12596 actively exploited?

Active exploitation of CVE-2018-12596 has not been confirmed. Its EPSS score was 22.4% on 2026-11-02, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12596?

CVE-2018-12596 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record