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CVE-2017-6327

88
FAUCET Score

CVE-2017-6327 is a critical remote code execution vulnerability affecting Symantec Messaging Gateway versions prior to 10.6.3-267. This flaw allows an authenticated attacker to execute arbitrary commands on the system, potentially leading to full system compromise and privilege escalation. With a CVSS score of 8.8 (HIGH) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk. It is actively exploited, listed in CISA's KEV catalog, and has publicly available exploit code (EDB-42519), garnering substantial community and media attention, including being targeted by state-sponsored actors.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.6.3-267CPE matchmatch criteria
cpe:2.3:a:symantec:message_gateway:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
35.34%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
ExploitDB: EDB-42519 · Aug 18, 2017
This CVE's current EPSS score of 0.3534 is in the 98th percentile among its peer group of 17,808 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
seclists.org / fulldisclosure/2017/Aug/28
Mailing ListThird Party Advisory
exploit-db.com / exploits/42519
Third Party AdvisoryVDB Entry
symantec.com / security_response/securityupdates/detail.jsp
Vendor Advisory
securityfocus.com / bid/100135
Broken LinkThird Party AdvisoryVDB Entry