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CVE-2016-3646

46
FAUCET Score

CVE-2016-3646 describes a critical vulnerability in the AntiVirus Decomposer engine across numerous Symantec products, including Endpoint Protection, Mail Security, and Norton consumer products. A remote attacker can execute arbitrary code or cause a denial of service by providing a specially crafted ZIP archive during decompression. With a CVSS v3 score of 8.4 (High), this vulnerability has a low attack complexity and no user interaction required, allowing for high impact on confidentiality, integrity, and availability. While not currently on the CISA KEV catalog, an exploit (EDB-40036) is publicly available, and it has garnered significant community discussion and media coverage, indicating a high potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 13.0.1CPE matchmatch criteria
cpe:2.3:a:symantec:norton_security:*:*:*:*:*:macos:*:*
>= 7.0.0, <= 7.0.5CPE matchmatch criteria
cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:*
>= 7.5.0, <= 7.5.4CPE matchmatch criteria
cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:*
7.8.0CPE matchmatch criteria
cpe:2.3:a:symantec:protection_engine:7.8.0:*:*:*:*:*:*:*
<= 2.0.3CPE matchmatch criteria
cpe:2.3:a:symantec:advanced_threat_protection:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.4HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
17.74%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-40036 · Jun 29, 2016
This CVE's current EPSS score of 0.1774 is in the 99th percentile among its peer group of 3,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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

exploit-db.com / exploits/40036
Third Party AdvisoryVDB Entry
symantec.com / security_response/securityupdates/detail.jsp
Vendor Advisory
securityfocus.com / bid/91435
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036198
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036199
Third Party AdvisoryVDB Entry