vciy

CVE-2017-6326

INDEX BUILT · 2026-09-20

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The Symantec Messaging Gateway can encounter an issue of remote code execution, which describes a situation whereby an individual may obtain the…

CVE-2017-63264 of 4 sources documented this
46

rank 46 = 18 + 25 + 1 + 2 + 0

rank@v1 · this cycle

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.72759  ·  without this subject the record ranks 28

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 10.0, from NVD  ·  without this subject the record ranks 21

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-12-18  ·  without this subject the record ranks 45

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 44

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 46

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.63Mover the next 30 days, if this record is yours
Movement+$863,000on 2024-12-17, the last material move, 1 year, 8 months before this reading
Basisassumeda published average, not your estate

$3.63M = $4.99M incident cost x 1 exposure x 0.72759 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.72759EPSSNOT IN KEVas of 2026-09-20
Severity10 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-03-17, 538 days at 0.73, as of 2026-09-06. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Symantec Corporation Messaging Gateway? Check your version

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.0 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 6 Sep 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD10 CRITICALreceipt
Exploit probability0.72759 · top 0.58% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bysymantecreceipt
Recorded changes23 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productSymantec Corporation Messaging Gatewayreceipt
Published rangessymantec messaging gateway <= 10.6.3receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
10 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
affected versions
symantec messaging gateway <= 10.6.3

check it yourself securitytracker.com exploit-db.com securityfocus.com symantec.com receipt

Dated events

2022-02-04EPSS moved 0.44 to 0.832023-03-07EPSS moved 0.83 to 0.362026-09-06EPSS moved 0.67 to 0.73

Movement the material steps

14 Apr 20210.43595
4 Feb 20220.83379 · crossed 0.50
7 Mar 20230.35704 · crossed 0.50 · scoring model v2023.03.01
17 Dec 20240.62745 · crossed 0.50
17 Mar 20250.70462 · scoring model v2025.03.14
15 Jun 20260.72759 · scoring model v2026.06.15
6 Sep 20260.72759
Show all 23 observations
14 Apr 20210.43595
4 Feb 20220.83379
7 Mar 20230.35704
6 May 20230.35729
6 Jun 20230.41354
22 Aug 20230.36756
30 Sep 20230.34958
21 Dec 20230.34038
8 Jul 20240.36167
2 Nov 20240.45449
17 Dec 20240.62745
8 Jan 20250.63060
11 Feb 20250.60616
16 Mar 20250.55880
17 Mar 20250.70462
29 Mar 20250.74926
30 Mar 20250.70462
18 Dec 20250.79143
15 Jun 20260.72759
23 Aug 20260.66649
30 Aug 20260.72759
5 Sep 20260.66649
6 Sep 20260.72759

23 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.72759Published2017-06-26Index as of2026-09-06

The record had been public for 9 years, 2 months when this index was last written.

Published 2017-06-26 receipt · Index as of 2026-09-06 derived

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What usually comes next

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