CVE-2017-17562

CRITICALNVD 8.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-12-10), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 96%CVSS: 8.1Exploit: cisa kev · ssvc active · 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.

Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc dynamic linker, this behaviour can be abused for remote code execution using special parameter names such as LD_PRELOAD. An attacker can POST their shared object payload in the body of the request, and reference it using /proc/self/fd/0.

CVSS v3
8.1
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
96%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

December 12, 2017

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated May 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic
http://www.securitytracker.com/id/1040702
generic🟡 PoC Available

GoAhead Web Server 2.5 < 3.6.5 - HTTPd 'LD_PRELOAD' Arbitrary Module Load (Metasploit) - Multiple remote Exploit

https://www.exploit-db.com/exploits/43877/
generic🟡 PoC Available

GoAhead Web Server 2.5 < 3.6.5 - HTTPd 'LD_PRELOAD' Remote Code Execution - Linux remote Exploit

https://www.exploit-db.com/exploits/43360/
generic

Remote LD_PRELOAD Exploitation - elttam

https://www.elttam.com.au/blog/goahead/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 48× in last 7d / 215× 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.

Showing the most recent 100 of 708 total refreshes for this CVE.

  1. 2026-09-08 14:22 UTCGHSA enrichment
  2. 2026-09-08 10:29 UTCGHSA enrichment
  3. 2026-09-08 06:39 UTCGHSA enrichment
  4. 2026-09-08 02:46 UTCGHSA enrichment
  5. 2026-09-07 22:57 UTCGHSA enrichment
  6. 2026-09-07 19:07 UTCGHSA enrichment
  7. 2026-09-07 15:18 UTCGHSA enrichment
  8. 2026-09-07 11:27 UTCGHSA enrichment
  9. 2026-09-07 07:37 UTCGHSA enrichment
  10. 2026-09-07 03:43 UTCGHSA enrichment
  11. 2026-09-06 23:51 UTCGHSA enrichment
  12. 2026-09-06 20:00 UTCGHSA enrichment
  13. 2026-09-06 16:10 UTCEG score recompute
  14. 2026-09-06 16:10 UTCGHSA enrichment
  15. 2026-09-06 12:19 UTCGHSA enrichment
  16. 2026-09-06 08:29 UTCGHSA enrichment
  17. 2026-09-06 04:39 UTCGHSA enrichment
  18. 2026-09-06 00:49 UTCGHSA enrichment
  19. 2026-09-05 20:59 UTCGHSA enrichment
  20. 2026-09-05 17:09 UTCEG score recompute
  21. 2026-09-05 17:09 UTCGHSA enrichment
  22. 2026-09-05 13:16 UTCGHSA enrichment
  23. 2026-09-05 09:25 UTCGHSA enrichment
  24. 2026-09-05 05:35 UTCGHSA enrichment
  25. 2026-09-05 01:45 UTCGHSA enrichment
Show 75 more
  1. 2026-09-04 21:55 UTCGHSA enrichment
  2. 2026-09-04 18:04 UTCGHSA enrichment
  3. 2026-09-04 17:38 UTCCISA KEV update
  4. 2026-09-04 14:14 UTCGHSA enrichment
  5. 2026-09-04 10:24 UTCGHSA enrichment
  6. 2026-09-04 06:34 UTCGHSA enrichment
  7. 2026-09-04 02:41 UTCGHSA enrichment
  8. 2026-09-03 22:50 UTCGHSA enrichment
  9. 2026-09-03 18:59 UTCGHSA enrichment
  10. 2026-09-03 15:07 UTCGHSA enrichment
  11. 2026-09-03 11:14 UTCGHSA enrichment
  12. 2026-09-03 07:24 UTCGHSA enrichment
  13. 2026-09-03 03:33 UTCGHSA enrichment
  14. 2026-09-02 23:42 UTCGHSA enrichment
  15. 2026-09-02 19:53 UTCGHSA enrichment
  16. 2026-09-02 17:33 UTCCISA KEV update
  17. 2026-09-02 16:03 UTCGHSA enrichment
  18. 2026-09-02 12:12 UTCGHSA enrichment
  19. 2026-09-02 08:23 UTCGHSA enrichment
  20. 2026-09-02 04:32 UTCGHSA enrichment
  21. 2026-09-02 00:41 UTCGHSA enrichment
  22. 2026-09-01 20:51 UTCGHSA enrichment
  23. 2026-09-01 17:01 UTCGHSA enrichment
  24. 2026-09-01 13:07 UTCGHSA enrichment
  25. 2026-09-01 09:16 UTCGHSA enrichment
  26. 2026-09-01 05:25 UTCGHSA enrichment
  27. 2026-09-01 01:33 UTCGHSA enrichment
  28. 2026-08-31 21:40 UTCGHSA enrichment
  29. 2026-08-31 17:51 UTCGHSA enrichment
  30. 2026-08-31 14:19 UTCCISA KEV update
  31. 2026-08-31 14:01 UTCGHSA enrichment
  32. 2026-08-31 10:09 UTCGHSA enrichment
  33. 2026-08-31 06:15 UTCGHSA enrichment
  34. 2026-08-31 02:23 UTCGHSA enrichment
  35. 2026-08-30 22:32 UTCEG score recompute
  36. 2026-08-30 22:32 UTCGHSA enrichment
  37. 2026-08-30 19:13 UTCEPSS rescore
  38. 2026-08-30 18:43 UTCGHSA enrichment
  39. 2026-08-30 14:53 UTCGHSA enrichment
  40. 2026-08-30 11:03 UTCGHSA enrichment
  41. 2026-08-30 07:12 UTCGHSA enrichment
  42. 2026-08-30 03:22 UTCEG score recompute
  43. 2026-08-30 03:22 UTCGHSA enrichment
  44. 2026-08-29 23:32 UTCGHSA enrichment
  45. 2026-08-29 19:42 UTCGHSA enrichment
  46. 2026-08-29 15:53 UTCGHSA enrichment
  47. 2026-08-29 12:01 UTCGHSA enrichment
  48. 2026-08-29 08:10 UTCGHSA enrichment
  49. 2026-08-29 04:19 UTCGHSA enrichment
  50. 2026-08-29 00:27 UTCEG score recompute
  51. 2026-08-29 00:27 UTCGHSA enrichment
  52. 2026-08-28 21:36 UTCEPSS rescore
  53. 2026-08-28 20:35 UTCGHSA enrichment
  54. 2026-08-28 16:43 UTCGHSA enrichment
  55. 2026-08-28 12:52 UTCGHSA enrichment
  56. 2026-08-28 08:58 UTCGHSA enrichment
  57. 2026-08-28 05:05 UTCGHSA enrichment
  58. 2026-08-28 01:15 UTCGHSA enrichment
  59. 2026-08-27 21:24 UTCGHSA enrichment
  60. 2026-08-27 17:35 UTCGHSA enrichment
  61. 2026-08-27 17:22 UTCCISA KEV update
  62. 2026-08-27 13:45 UTCGHSA enrichment
  63. 2026-08-27 09:54 UTCGHSA enrichment
  64. 2026-08-27 06:02 UTCGHSA enrichment
  65. 2026-08-27 02:08 UTCGHSA enrichment
  66. 2026-08-26 22:18 UTCGHSA enrichment
  67. 2026-08-26 18:28 UTCGHSA enrichment
  68. 2026-08-26 17:41 UTCCISA KEV update
  69. 2026-08-26 14:39 UTCGHSA enrichment
  70. 2026-08-26 10:49 UTCGHSA enrichment
  71. 2026-08-26 07:00 UTCGHSA enrichment
  72. 2026-08-26 03:09 UTCGHSA enrichment
  73. 2026-08-25 23:17 UTCGHSA enrichment
  74. 2026-08-25 19:27 UTCGHSA enrichment
  75. 2026-08-25 15:37 UTCGHSA enrichment

Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCnu11pointer/goahead-rce-exploit
    First seen Nov 14, 2021

    Exploit for CVE-2017-17562 vulnerability, that allows RCE on GoAhead (< v3.6.5) if the CGI is enabled and a CGI program is dynamically linked.

    Open source ↗
  • GitHub PoCivanitlearning/CVE-2017-17562
    First seen Oct 16, 2019

    Standalone Python 3 exploit for CVE-2017-17562

    Open source ↗
  • Exploit-DBEDB-43877✓ verified
    First seen Jan 24, 2018

    GoAhead Web Server 2.5 < 3.6.5 - HTTPd 'LD_PRELOAD' Arbitrary Module Load (Metasploit)

    Open source ↗
  • Exploit-DBEDB-43360✓ verified
    First seen Dec 18, 2017

    GoAhead Web Server 2.5 < 3.6.5 - HTTPd 'LD_PRELOAD' Remote Code Execution

    Open source ↗
  • Metasploitexploit/linux/http/goahead_ldpreload✓ verified
    First seen Dec 18, 2017

    GoAhead Web Server LD_PRELOAD Arbitrary Module Load

    Open source ↗
  • Nucleihttp/cves/2017/CVE-2017-17562.yaml
    First seen Jan 1, 2017

    Embedthis GoAhead <3.6.5 - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2017-17562?
CVE-2017-17562 is a critical vulnerability published on December 12, 2017. Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc…
When was CVE-2017-17562 disclosed?
CVE-2017-17562 was first published in the National Vulnerability Database on December 12, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-17562 actively exploited?
Yes. CISA added CVE-2017-17562 to the Known Exploited Vulnerabilities catalog on December 10, 2021, affecting Embedthis GoAhead. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-17562?
CVE-2017-17562 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2017-17562?
CVE-2017-17562 affects Embedthis GoAhead. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2017-17562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-17562, 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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