CVE-2017-6326

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
10.0EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 73%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 73%CVSS: 10.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

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

The Symantec Messaging Gateway can encounter an issue of remote code execution, which describes a situation whereby an individual may obtain the ability to execute commands remotely on a target machine or in a target process.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
79
EG Risk 79/100CISA SSVC

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%
Exploitation73% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
73%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 26, 2017

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Sep 30, 2026
🔬 Proof of concept available. No fix on record yet.
generic

Security Updates Detail

https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20170621_00
generic🟡 PoC Available

Symantec Messaging Gateway 10.6.2-7 - Remote Code Execution (Metasploit) - Python remote Exploit

https://www.exploit-db.com/exploits/42251/
generic

CVE-2017-6326 - PSIRT.COM

http://www.securityfocus.com/bid/98893
generic
http://www.securitytracker.com/id/1038785

Data Freshness Timeline

(refreshed 1× in last 7d / 11× 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. 2026-09-30 09:36 UTCEG score recompute
  2. 2026-09-27 13:40 UTCEPSS rescore
  3. 2026-09-27 13:40 UTCEPSS rescore
  4. 2026-09-26 15:53 UTCEPSS rescore
  5. 2026-09-24 13:59 UTCEPSS rescore
  6. 2026-09-18 19:22 UTCEPSS rescore
  7. 2026-09-17 19:22 UTCEPSS rescore
  8. 2026-09-13 16:42 UTCEPSS rescore
  9. 2026-09-12 14:55 UTCEPSS rescore
  10. 2026-09-11 09:31 UTCEPSS rescore
  11. 2026-09-06 13:43 UTCEPSS rescore
  12. 2026-09-05 15:23 UTCEPSS rescore
  13. 2026-09-04 13:56 UTCEPSS rescore
  14. 2026-09-02 14:07 UTCEPSS rescore
  15. 2026-09-02 14:07 UTCEPSS rescore
  16. 2026-08-30 19:13 UTCEPSS rescore
  17. 2026-08-26 14:41 UTCEPSS rescore
  18. 2026-08-21 23:44 UTCEPSS rescore
  19. 2026-08-19 16:59 UTCEPSS rescore
  20. 2026-08-17 13:42 UTCEPSS rescore
  21. 2026-08-16 14:51 UTCEPSS rescore
  22. 2026-08-16 02:10 UTCEPSS rescore
  23. 2026-08-15 01:26 UTCEPSS rescore
  24. 2026-08-12 13:46 UTCEPSS rescore
  25. 2026-08-07 16:22 UTCEPSS rescore
Show 73 more
  1. 2026-07-30 16:24 UTCEPSS rescore
  2. 2026-07-28 15:32 UTCEPSS rescore
  3. 2026-07-23 14:15 UTCEPSS rescore
  4. 2026-07-23 01:30 UTCEG score recompute
  5. 2026-07-22 22:09 UTCEG score recompute
  6. 2026-07-22 14:04 UTCEPSS rescore
  7. 2026-07-22 14:04 UTCEPSS rescore
  8. 2026-07-21 15:21 UTCEPSS rescore
  9. 2026-07-21 15:21 UTCEPSS rescore
  10. 2026-07-20 17:04 UTCEPSS rescore
  11. 2026-07-16 16:59 UTCEPSS rescore
  12. 2026-07-16 16:59 UTCEPSS rescore
  13. 2026-07-15 16:54 UTCEPSS rescore
  14. 2026-07-11 08:24 UTCEPSS rescore
  15. 2026-07-09 19:06 UTCEPSS rescore
  16. 2026-07-07 13:42 UTCEPSS rescore
  17. 2026-07-06 16:24 UTCEPSS rescore
  18. 2026-07-06 16:24 UTCEPSS rescore
  19. 2026-07-06 02:20 UTCEPSS rescore
  20. 2026-07-06 02:20 UTCEPSS rescore
  21. 2026-07-04 06:28 UTCEPSS rescore
  22. 2026-07-02 16:54 UTCEPSS rescore
  23. 2026-07-01 15:02 UTCEPSS rescore
  24. 2026-06-29 14:03 UTCEPSS rescore
  25. 2026-06-28 04:53 UTCEPSS rescore
  26. 2026-06-25 13:47 UTCEPSS rescore
  27. 2026-06-23 21:30 UTCEPSS rescore
  28. 2026-06-21 14:54 UTCEPSS rescore
  29. 2026-06-21 14:54 UTCEPSS rescore
  30. 2026-06-17 17:50 UTCEPSS rescore
  31. 2026-06-16 17:50 UTCEPSS rescore
  32. 2026-06-16 17:50 UTCEPSS rescore
  33. 2026-06-15 17:45 UTCEPSS rescore
  34. 2026-06-13 22:57 UTCEPSS rescore
  35. 2026-06-12 23:09 UTCEPSS rescore
  36. 2026-06-10 22:15 UTCEPSS rescore
  37. 2026-06-10 13:19 UTCEPSS rescore
  38. 2026-06-07 15:22 UTCEPSS rescore
  39. 2026-06-07 15:22 UTCEPSS rescore
  40. 2026-06-05 22:44 UTCEPSS rescore
  41. 2026-06-05 06:08 UTCEPSS rescore
  42. 2026-06-05 06:08 UTCEPSS rescore
  43. 2026-06-04 13:10 UTCEPSS rescore
  44. 2026-06-02 20:11 UTCEPSS rescore
  45. 2026-06-02 20:11 UTCEPSS rescore
  46. 2026-06-01 13:49 UTCEPSS rescore
  47. 2026-05-31 22:28 UTCEPSS rescore
  48. 2026-05-31 22:28 UTCEPSS rescore
  49. 2026-05-31 00:14 UTCEPSS rescore
  50. 2026-05-31 00:14 UTCEPSS rescore
  51. 2026-05-29 13:41 UTCEPSS rescore
  52. 2026-05-28 13:42 UTCEPSS rescore
  53. 2026-05-28 13:42 UTCEPSS rescore
  54. 2026-05-26 13:42 UTCEPSS rescore
  55. 2026-05-26 13:42 UTCEPSS rescore
  56. 2026-05-22 21:15 UTCEPSS rescore
  57. 2026-05-22 21:15 UTCEPSS rescore
  58. 2026-05-22 21:15 UTCEPSS rescore
  59. 2026-05-22 21:15 UTCEPSS rescore
  60. 2026-05-22 21:15 UTCEPSS rescore
  61. 2026-05-20 22:37 UTCEPSS rescore
  62. 2026-05-20 22:37 UTCEPSS rescore
  63. 2026-05-20 22:37 UTCEPSS rescore
  64. 2026-05-20 07:42 UTCGHSA enrichment
  65. 2026-05-20 03:31 UTCGHSA enrichment
  66. 2026-05-19 23:19 UTCGHSA enrichment
  67. 2026-05-19 19:08 UTCGHSA enrichment
  68. 2026-05-19 14:57 UTCGHSA enrichment
  69. 2026-05-19 10:45 UTCGHSA enrichment
  70. 2026-05-19 06:34 UTCGHSA enrichment
  71. 2026-05-19 02:22 UTCGHSA enrichment
  72. 2026-05-18 22:11 UTCEG score recompute
  73. 2026-05-18 21:30 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-42251✓ verified
    First seen Jun 26, 2017

    Symantec Messaging Gateway 10.6.2-7 - Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/linux/http/symantec_messaging_gateway_exec✓ verified
    First seen Apr 26, 2017

    Symantec Messaging Gateway Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2017-6326?
CVE-2017-6326 is a critical vulnerability published on June 26, 2017. The Symantec Messaging Gateway can encounter an issue of remote code execution, which describes a situation whereby an individual may obtain the ability to execute commands remotely on a target machine or in a target process.
When was CVE-2017-6326 disclosed?
CVE-2017-6326 was first published on June 26, 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-2017-6326 actively exploited?
CVE-2017-6326 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 73% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-6326?
CVE-2017-6326 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2017-6326?
No fix for CVE-2017-6326 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

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