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CVE-2016-5310

25
FAUCET Score

CVE-2016-5310 describes a denial-of-service vulnerability in the RAR file parser component of Symantec's AntiVirus Decomposer engine, impacting numerous Symantec products including Endpoint Protection, Mail Security, and Messaging Gateway. This flaw allows a remote attacker to trigger memory corruption and a denial of service by providing a specially crafted RAR file during decompression. Rated with a CVSS score of 5.5 (Medium), the vulnerability requires user interaction (e.g., opening a malicious file) and has a low attack complexity, with the primary impact being high availability loss. While not actively exploited in the wild, an exploit (EDB-40405) exists on ExploitDB, though there is no evidence of widespread community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:broadcom:symantec_data_center_security_server:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:symantec:advanced_threat_protection:-:*:*:*:*:*:*:*
<= 10.0.4CPE matchmatch criteria
cpe:2.3:a:symantec:csapi:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:symantec:email_security.cloud:-:*:*:*:*:*:*:*
<= 12.1.4CPE matchmatch criteria
cpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:mac:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.31%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-40405 · Sep 21, 2016
This CVE's current EPSS score of 0.0531 is in the 97th percentile among its peer group of 5,757 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

bugs.chromium.org / p/project-zero/issues/detail
ExploitPatchThird Party Advisory
exploit-db.com / exploits/40405
ExploitThird Party AdvisoryVDB Entry
symantec.com / security_response/securityupdates/detail.jsp
Vendor Advisory
securityfocus.com / bid/92866
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036847
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036848
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036849
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036850
Third Party AdvisoryVDB Entry