CVE-2012-5223

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 41%CVSS: —Exploit: NoneExposed: 0

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

The proc_deutf function in includes/functions_vbseocp_abstract.php in vBSEO 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier allows remote attackers to insert and execute arbitrary PHP code via "complex curly syntax" in the char_repl parameter, which is inserted into a regular expression that is processed by the preg_replace function with the eval switch.

CVSS v3
—
EG Score
0.0(none)
EPSS
98.5%
KEV
Not listed

Published

October 1, 2012

Last Modified

April 29, 2026

References (12)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 25× 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. 2026-07-01 15:02 UTCEPSS rescore
  3. 2026-06-30 23:19 UTCEPSS rescore
  4. 2026-06-30 23:19 UTCEPSS rescore
  5. 2026-06-28 14:03 UTCEPSS rescore
  6. 2026-06-28 04:53 UTCEPSS rescore
  7. 2026-06-28 04:53 UTCEPSS rescore
  8. 2026-06-27 03:05 UTCEPSS rescore
  9. 2026-06-25 13:46 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-24 14:02 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-22 14:22 UTCEPSS rescore
  14. 2026-06-22 14:22 UTCEPSS rescore
  15. 2026-06-21 01:57 UTCEPSS rescore
  16. 2026-06-21 01:56 UTCEPSS rescore
  17. 2026-06-18 17:49 UTCEPSS rescore
  18. 2026-06-18 17:49 UTCEPSS rescore
  19. 2026-06-17 17:49 UTCEPSS rescore
  20. 2026-06-17 17:49 UTCEPSS rescore
  21. 2026-06-16 17:49 UTCEPSS rescore
  22. 2026-06-16 17:49 UTCEPSS rescore
  23. 2026-06-15 17:44 UTCEPSS rescore
  24. 2026-06-14 23:14 UTCEPSS rescore
  25. 2026-06-12 23:08 UTCEPSS rescore
Show 28 more
  1. 2026-06-07 15:22 UTCEPSS rescore
  2. 2026-06-06 13:45 UTCEPSS rescore
  3. 2026-06-06 13:45 UTCEPSS rescore
  4. 2026-06-05 22:44 UTCEPSS rescore
  5. 2026-06-05 22:44 UTCEPSS rescore
  6. 2026-06-05 06:08 UTCEPSS rescore
  7. 2026-06-05 06:08 UTCEPSS rescore
  8. 2026-06-02 20:10 UTCEPSS rescore
  9. 2026-06-02 20:10 UTCEPSS rescore
  10. 2026-06-01 13:49 UTCEPSS rescore
  11. 2026-06-01 13:49 UTCEPSS rescore
  12. 2026-05-31 00:14 UTCEPSS rescore
  13. 2026-05-31 00:14 UTCEPSS rescore
  14. 2026-05-29 13:41 UTCEPSS rescore
  15. 2026-05-29 13:41 UTCEPSS rescore
  16. 2026-05-29 02:29 UTCEG score recompute
  17. 2026-05-29 02:29 UTCGHSA enrichment
  18. 2026-05-27 13:38 UTCEPSS rescore
  19. 2026-05-27 13:38 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. 2026-05-18 21:29 UTCEPSS rescore
  28. 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-18424✓ verified
    First seen Jan 27, 2012

    vBSEO 3.6.0 - 'proc_deutf()' Remote PHP Code Injection (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/http/vbseo_proc_deutf✓ verified
    First seen Jan 23, 2012

    vBSEO proc_deutf() Remote PHP Code Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2012-5223?
CVE-2012-5223 is a none vulnerability published on October 1, 2012. The procdeutf function in includes/functionsvbseocpabstract.php in vBSEO 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier allows remote attackers to insert and execute arbitrary PHP code via "complex curly syntax" in the charrepl parameter, which is inserted into a regular expression that is processed by…
When was CVE-2012-5223 disclosed?
CVE-2012-5223 was first published in the National Vulnerability Database on October 1, 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-2012-5223 actively exploited?
CVE-2012-5223 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2012-5223?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-5223, 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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