CVE-2017-6326
CriticalPublic exploitThe 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.
Published Jun 26, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2017-6326 is a critical-severity vulnerability (CVSS 10.0 v3) affecting Messaging Gateway (Symantec).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 73% probability of exploitation in the next 30 days.
- Fixed versions are available, including Messaging Gateway 10.6.3.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3
10.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
73%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Messaging GatewaySymantec | >= All versions prior to version 10.6.3 | 10.6.3 |
Patched Releases
Messaging Gateway
10.6.3
Timeline
Publicly disclosed
Jun 26, 2017
Last updated
May 12, 2026
References
- advisoryhttps://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20170621_00
- advisory98893
- exploitMSF symantec_messaging_gateway_exec.rb
- exploitExploitDB-42251
- other42251
FAQ
Common Questions.
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.
Affected: Messaging Gateway (Symantec) versions >= All versions prior to version 10.6.3. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Messaging Gateway 10.6.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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