CVE-2016-2203

HIGHNVD 7.87.8—Weaponized

7.8

The management console on Symantec Messaging Gateway (SMG) Appliance devices before 10.6.1 allows local users to discover an encrypted AD password by leveraging certain read privileges.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 96.7%
KEV: Not listed

Published

April 22, 2016

Last Modified

May 6, 2026

References (10)

secure@symantechttp://packetstormsecurity.com/files/136758/Symantec-Brightmail-10.6.0-7-LDAP-Credential-Grabber.html
secure@symantechttp://www.securityfocus.com/bid/86137
secure@symantechttp://www.securitytracker.com/id/1035609
secure@symantechttp://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160418_00
secure@symantechttps://www.exploit-db.com/exploits/39715/
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/136758/Symantec-Brightmail-10.6.0-7-LDAP-Credential-Grabber.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/86137
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1035609
af854a3a-2127-422b-91ae-364da2661108http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160418_00
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/39715/

Data Freshness Timeline

(refreshed 5× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-24 16:43 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-22 20:37 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-39715
First seen Apr 21, 2016
Symantec Brightmail 10.6.0-7 - LDAP Credentials Disclosure (Metasploit)
Open source ↗
Metasploitauxiliary/scanner/http/symantec_brightmail_ldapcreds✓ verified
First seen Dec 17, 2015
Symantec Messaging Gateway 10 Exposure of Stored AD Password Vulnerability
Open source ↗

Frequently asked(5)

What is CVE-2016-2203?

CVE-2016-2203 is a high vulnerability published on April 22, 2016. The management console on Symantec Messaging Gateway (SMG) Appliance devices before 10.6.1 allows local users to discover an encrypted AD password by leveraging certain read privileges.

When was CVE-2016-2203 disclosed?

CVE-2016-2203 was first published in the National Vulnerability Database on April 22, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-2203 actively exploited?

CVE-2016-2203 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-2203?

CVE-2016-2203 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2016-2203?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-2203, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2016-2203

📅 Published

🔄 Last Modified

🔗 References (10)