Which products and versions are affected by CVE-2016-5312?

Affected: Messaging Gateway (Symantec). The full list is in the CVE brief.

Is CVE-2016-5312 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Aug 15, 2026.

Is CVE-2016-5312 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2016-5312?

Public exploit code is available.

Is there a fix for CVE-2016-5312?

Fixed versions are available, including Messaging Gateway 10.6.1.

How urgently should CVE-2016-5312 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2016-5312

MediumExploitedPublic exploit

Directory traversal vulnerability in the charting component in Symantec Messaging Gateway before 10.6.2 allows remote authenticated users to read arbitrary files via a ..

Published Apr 14, 2017 · Updated May 12, 2026

Key Facts

Patch immediately

CVE-2016-5312 is a medium-severity vulnerability (CVSS 6.5 v3) affecting Messaging Gateway (Symantec).
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Aug 15, 2026. Public exploit code is available.
EPSS estimates a 54% probability of exploitation in the next 30 days.
Fixed versions are available, including Messaging Gateway 10.6.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3

6.5

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

54%

Higher than 98.9% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2016-5312 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Directory traversal vulnerability in the charting component in Symantec Messaging Gateway before 10.6.2 allows remote authenticated users to read arbitrary files via a .. (dot dot) in the sn parameter to brightmail/servlet/com.ve.kavachart.servlet.ChartStream.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Aug 15, 2026	n/a	Not reported
CIRCL KEV	Aug 15, 2026	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Messaging GatewaySymantec	See advisory	10.6.1

Patched Releases

Messaging Gateway

10.6.1

Timeline

Publicly disclosed
Apr 14, 2017
Last updated
May 12, 2026
Added to Industry KEV feed
Aug 15, 2026
Added to CIRCL KEV
Aug 15, 2026

Weakness Type

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References

12 more references in the full CVE brief

FAQ

Common Questions.

Directory traversal vulnerability in the charting component in Symantec Messaging Gateway before 10.6.2 allows remote authenticated users to read arbitrary files via a ..
Affected: Messaging Gateway (Symantec). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Aug 15, 2026.
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 10.6.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2016-5312 Running On Your Attack Surface?

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