CVE-2012-5357

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 68%
CISA-KEV: Not listedEPSS: 68%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript set to true, which allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
99.2%
KEV
Not listed

Published

October 30, 2017

Last Modified

May 13, 2026

Advisory Details (3)

Auto-updated May 18, 2026
No patch confirmed yet.
generic

Rapid7 Vulnerability Database

https://www.rapid7.com/db/modules/exploit/windows/http/ektron_xslt_exec
generic
https://webstersprodigy.net/2012/10/25/cve-2012-5357cve-1012-5358-cool-ektron-xslt-rce-bugs/
generic

Microsoft Vulnerability Research Advisory MSVR12-016 | Microsoft Learn

https://technet.microsoft.com/library/security/msvr12-016

Data Freshness Timeline

(refreshed 4× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-04 06:27 UTCEPSS rescore
  2. 2026-07-01 15:02 UTCEPSS rescore
  3. 2026-06-30 23:19 UTCEPSS rescore
  4. 2026-06-30 23:19 UTCEPSS rescore
  5. 2026-06-27 03:05 UTCEPSS rescore
  6. 2026-06-25 13:46 UTCEPSS rescore
  7. 2026-06-24 14:02 UTCEPSS rescore
  8. 2026-06-24 14:02 UTCEPSS rescore
  9. 2026-06-23 21:30 UTCEPSS rescore
  10. 2026-06-18 17:49 UTCEPSS rescore
  11. 2026-06-18 17:49 UTCEPSS rescore
  12. 2026-06-17 17:49 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-16 17:49 UTCEPSS rescore
  15. 2026-06-16 17:49 UTCEPSS rescore
  16. 2026-06-15 17:44 UTCEPSS rescore
  17. 2026-06-14 23:14 UTCEPSS rescore
  18. 2026-06-12 23:08 UTCEPSS rescore
  19. 2026-06-06 13:45 UTCEPSS rescore
  20. 2026-06-06 13:45 UTCEPSS rescore
  21. 2026-06-05 22:44 UTCEPSS rescore
  22. 2026-06-05 22:44 UTCEPSS rescore
  23. 2026-06-05 06:08 UTCEPSS rescore
  24. 2026-06-05 06:08 UTCEPSS rescore
  25. 2026-05-31 22:28 UTCEPSS rescore
Show 37 more
  1. 2026-05-31 22:28 UTCEPSS rescore
  2. 2026-05-29 13:41 UTCEPSS rescore
  3. 2026-05-29 13:41 UTCEPSS rescore
  4. 2026-05-28 13:42 UTCEPSS rescore
  5. 2026-05-28 13:42 UTCEPSS rescore
  6. 2026-05-28 13:42 UTCEPSS rescore
  7. 2026-05-27 13:38 UTCEPSS rescore
  8. 2026-05-27 13:38 UTCEPSS rescore
  9. 2026-05-24 16:43 UTCEPSS rescore
  10. 2026-05-22 21:15 UTCEPSS rescore
  11. 2026-05-22 21:15 UTCEPSS rescore
  12. 2026-05-22 21:15 UTCEPSS rescore
  13. 2026-05-21 22:39 UTCEPSS rescore
  14. 2026-05-20 22:37 UTCEPSS rescore
  15. 2026-05-20 22:37 UTCEPSS rescore
  16. 2026-05-20 09:49 UTCEG score recompute
  17. 2026-05-20 09:49 UTCGHSA enrichment
  18. 2026-05-20 06:05 UTCEG score recompute
  19. 2026-05-20 06:05 UTCGHSA enrichment
  20. 2026-05-20 02:21 UTCEG score recompute
  21. 2026-05-20 02:21 UTCGHSA enrichment
  22. 2026-05-19 22:36 UTCEG score recompute
  23. 2026-05-19 22:36 UTCGHSA enrichment
  24. 2026-05-19 18:52 UTCEG score recompute
  25. 2026-05-19 18:52 UTCGHSA enrichment
  26. 2026-05-19 15:08 UTCEG score recompute
  27. 2026-05-19 15:08 UTCGHSA enrichment
  28. 2026-05-19 11:24 UTCEG score recompute
  29. 2026-05-19 11:24 UTCGHSA enrichment
  30. 2026-05-19 07:38 UTCEG score recompute
  31. 2026-05-19 07:38 UTCGHSA enrichment
  32. 2026-05-19 03:53 UTCEG score recompute
  33. 2026-05-19 03:53 UTCGHSA enrichment
  34. 2026-05-19 00:08 UTCEG score recompute
  35. 2026-05-19 00:08 UTCGHSA enrichment
  36. 2026-05-18 21:29 UTCEPSS rescore
  37. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-23155✓ verified
    First seen Dec 5, 2012

    Ektron 8.02 - XSLT Transform Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/http/ektron_xslt_exec✓ verified
    First seen Oct 16, 2012

    Ektron 8.02 XSLT Transform Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2012-5357?
CVE-2012-5357 is a critical vulnerability published on October 30, 2017. Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript set to true, which allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data.
When was CVE-2012-5357 disclosed?
CVE-2012-5357 was first published in the National Vulnerability Database on October 30, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-5357 actively exploited?
CVE-2012-5357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2012-5357?
CVE-2012-5357 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2012-5357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-5357, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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