CVE-2011-1566

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 67.0% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 67%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 67%CVSS v2: 10.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

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

Directory traversal vulnerability in dc.exe 9.00.00.11059 and earlier in 7-Technologies Interactive Graphical SCADA System (IGSS) allows remote attackers to execute arbitrary programs via ..\ (dot dot backslash) sequences in opcodes (1) 0xa and (2) 0x17 to TCP port 12397.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
76(Track)
EG Risk 76/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation67% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
67%
EPSS %ILE
99%
KEV
Not listed

Published

April 5, 2011

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 6× in last 7d / 21× 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. 2026-07-26 13:43 UTCEG score recompute▲ 10.00
  2. 2026-07-23 01:04 UTCEG score recompute
  3. 2026-07-23 00:40 UTCEG score recompute▼ 6.10
  4. 2026-07-23 00:08 UTCEG score recompute▲ 6.10
  5. 2026-07-22 21:47 UTCEG score recompute
  6. 2026-07-22 14:03 UTCEPSS rescore
  7. 2026-07-20 17:03 UTCEPSS rescore
  8. 2026-07-20 17:03 UTCEPSS rescore
  9. 2026-07-19 02:25 UTCEPSS rescore
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  11. 2026-07-16 16:58 UTCEPSS rescore
  12. 2026-07-15 16:54 UTCEPSS rescore
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  14. 2026-07-15 01:55 UTCEPSS rescore
  15. 2026-07-13 06:08 UTCEPSS rescore
  16. 2026-07-11 08:22 UTCEPSS rescore
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  18. 2026-07-05 02:26 UTCEPSS rescore
  19. 2026-07-02 14:01 UTCEPSS rescore
  20. 2026-07-01 15:02 UTCEPSS rescore
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  22. 2026-06-27 03:05 UTCEPSS rescore
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  24. 2026-06-25 13:46 UTCEPSS rescore
  25. 2026-06-24 14:02 UTCEPSS rescore
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  1. 2026-06-24 14:02 UTCEPSS rescore
  2. 2026-06-23 21:30 UTCEPSS rescore
  3. 2026-06-23 21:30 UTCEPSS rescore
  4. 2026-06-18 17:49 UTCEPSS rescore
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  11. 2026-06-13 22:57 UTCEPSS rescore
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  13. 2026-06-12 23:08 UTCEPSS rescore
  14. 2026-06-11 13:56 UTCEPSS rescore
  15. 2026-06-10 22:14 UTCEPSS rescore
  16. 2026-06-10 13:17 UTCEPSS rescore
  17. 2026-06-07 15:22 UTCEPSS rescore
  18. 2026-06-07 15:22 UTCEPSS rescore
  19. 2026-06-06 13:45 UTCEPSS rescore
  20. 2026-06-06 13:44 UTCEPSS rescore
  21. 2026-06-05 22:44 UTCEPSS rescore
  22. 2026-06-05 06:08 UTCEPSS rescore
  23. 2026-06-05 06:07 UTCEPSS rescore
  24. 2026-06-01 13:49 UTCEPSS rescore
  25. 2026-06-01 13:49 UTCEPSS rescore
  26. 2026-05-31 00:14 UTCEPSS rescore
  27. 2026-05-31 00:14 UTCEPSS rescore
  28. 2026-05-29 13:41 UTCEPSS rescore
  29. 2026-05-29 13:40 UTCEPSS rescore
  30. 2026-05-29 08:21 UTCEG score recompute
  31. 2026-05-29 08:21 UTCGHSA enrichment
  32. 2026-05-28 13:42 UTCEPSS rescore
  33. 2026-05-28 13:42 UTCEPSS rescore
  34. 2026-05-28 13:42 UTCEPSS rescore
  35. 2026-05-27 13:38 UTCEPSS rescore
  36. 2026-05-27 13:38 UTCEPSS rescore
  37. 2026-05-22 21:15 UTCEPSS rescore
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  40. 2026-05-20 22:37 UTCEPSS rescore
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  42. 2026-05-20 22:37 UTCEPSS rescore
  43. 2026-05-18 21:29 UTCEPSS rescore
  44. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (2 Metasploit modules) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-29129✓ verified
    First seen Oct 22, 2013

    Interactive Graphical SCADA System - Remote Command Injection (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/scada/igss9_misc✓ verified
    First seen Mar 24, 2011

    7-Technologies IGSS 9 Data Server/Collector Packet Handling Vulnerabilities

    Open source ↗
  • Exploit-DBEDB-17024
    First seen Mar 22, 2011

    7-Technologies IGSS 9.00.00.11059 - Multiple Vulnerabilities

    Open source ↗
  • Metasploitexploit/windows/scada/igss_exec_17✓ verified
    First seen Mar 21, 2011

    Interactive Graphical SCADA System Remote Command Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2011-1566?
CVE-2011-1566 is a high vulnerability published on April 5, 2011. Directory traversal vulnerability in dc.exe 9.00.00.11059 and earlier in 7-Technologies Interactive Graphical SCADA System (IGSS) allows remote attackers to execute arbitrary programs via ..\ (dot dot backslash) sequences in opcodes (1) 0xa and (2) 0x17 to TCP port 12397.
When was CVE-2011-1566 disclosed?
CVE-2011-1566 was first published in the National Vulnerability Database on April 5, 2011, 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-2011-1566 actively exploited?
CVE-2011-1566 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67% probability of exploitation in the next 30 days, which ranks it in the top 0.8% of all scored CVEs.
How do I remediate CVE-2011-1566?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1566, 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.

Dependency Blast Radius

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