CVE-2017-6327

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 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: 36%CVSS: 8.8Exploit: cisa kev · ssvc active · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

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

The Symantec Messaging Gateway before 10.6.3-267 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. In this type of occurrence, after gaining access to the system, the attacker may attempt to elevate their privileges.

CVSS v3
8.8
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
36%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

August 11, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated May 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6327
generic

Security Updates Detail

https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20170810_00
generic🟡 PoC Available

Symantec Messaging Gateway 10.6.3-2 - Root Remote Command Execution - JSP webapps Exploit

https://www.exploit-db.com/exploits/42519/
generic
http://www.securityfocus.com/bid/100135
generic

Full Disclosure: CVE-2017-6327: Symantec Messaging Gateway <= 10.6.3-2 unauthenticated root RCE

http://seclists.org/fulldisclosure/2017/Aug/28

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 227× 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 827 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-42519✓ verified
    First seen Aug 18, 2017

    Symantec Messaging Gateway 10.6.3-2 - Root Remote Command Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2017-6327?
CVE-2017-6327 is a critical vulnerability published on August 11, 2017. The Symantec Messaging Gateway before 10.6.3-267 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. In this type of occurrence, after gaining access to the…
When was CVE-2017-6327 disclosed?
CVE-2017-6327 was first published in the National Vulnerability Database on August 11, 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-2017-6327 actively exploited?
Yes. CISA added CVE-2017-6327 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Symantec Symantec Messaging Gateway. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-6327?
CVE-2017-6327 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2017-6327?
CVE-2017-6327 affects Symantec Symantec Messaging Gateway. 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-2017-6327?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6327, 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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