CVE-2012-0209

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 72%
CISA-KEV: Not listedEPSS: 72%CVSS: —Exploit: NoneExposed: 0

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

Horde 3.3.12, Horde Groupware 1.2.10, and Horde Groupware Webmail Edition 1.2.10, as distributed by FTP between November 2011 and February 2012, contains an externally introduced modification (Trojan Horse) in templates/javascript/open_calendar.js, which allows remote attackers to execute arbitrary PHP code.

CVSS v3
—
EG Score
0.0(none)
EPSS
99.4%
KEV
Not listed

Published

September 25, 2012

Last Modified

April 29, 2026

References (10)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 2× in last 7d / 22× 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. 2026-07-05 02:26 UTCEPSS rescore
  2. 2026-07-02 14:01 UTCEPSS rescore
  3. 2026-06-27 03:05 UTCEPSS rescore
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  5. 2026-06-25 13:46 UTCEPSS rescore
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  7. 2026-06-23 21:30 UTCEPSS rescore
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  11. 2026-06-18 17:49 UTCEPSS rescore
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  20. 2026-06-11 13:56 UTCEPSS rescore
  21. 2026-06-10 22:14 UTCEPSS rescore
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  25. 2026-06-06 13:45 UTCEPSS rescore
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  1. 2026-06-06 13:45 UTCEPSS rescore
  2. 2026-06-05 22:44 UTCEPSS rescore
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  4. 2026-06-05 06:08 UTCEPSS rescore
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  6. 2026-06-04 13:09 UTCEPSS rescore
  7. 2026-06-02 20:10 UTCEPSS rescore
  8. 2026-06-02 20:10 UTCEPSS rescore
  9. 2026-06-01 13:49 UTCEPSS rescore
  10. 2026-05-29 13:41 UTCEPSS rescore
  11. 2026-05-29 02:34 UTCEG score recompute
  12. 2026-05-29 02:34 UTCGHSA enrichment
  13. 2026-05-28 13:42 UTCEPSS rescore
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  15. 2026-05-27 13:38 UTCEPSS rescore
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  17. 2026-05-26 07:16 UTCEPSS rescore
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  19. 2026-05-26 07:16 UTCEPSS rescore
  20. 2026-05-24 16:43 UTCEPSS rescore
  21. 2026-05-22 21:15 UTCEPSS rescore
  22. 2026-05-22 21:15 UTCEPSS rescore
  23. 2026-05-22 21:15 UTCEPSS rescore
  24. 2026-05-21 22:39 UTCEPSS rescore
  25. 2026-05-20 22:37 UTCEPSS rescore
  26. 2026-05-20 22:37 UTCEPSS rescore
  27. 2026-05-20 22:37 UTCEPSS rescore
  28. 2026-05-18 21:29 UTCEPSS rescore
  29. 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-18492✓ verified
    First seen Feb 17, 2012

    Horde 3.3.12 - Backdoor Arbitrary PHP Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/http/horde_href_backdoor✓ verified
    First seen Feb 13, 2012

    Horde 3.3.12 Backdoor Arbitrary PHP Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2012-0209?
CVE-2012-0209 is a none vulnerability published on September 25, 2012. Horde 3.3.12, Horde Groupware 1.2.10, and Horde Groupware Webmail Edition 1.2.10, as distributed by FTP between November 2011 and February 2012, contains an externally introduced modification (Trojan Horse) in templates/javascript/open_calendar.js, which allows remote attackers to execute arbitrary…
When was CVE-2012-0209 disclosed?
CVE-2012-0209 was first published in the National Vulnerability Database on September 25, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-0209 actively exploited?
CVE-2012-0209 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2012-0209?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-0209, 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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