CVE-2016-2203

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, public exploit)
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 7.8Exploit: Metasploit · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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)
EG Risk
66(Track)
EG Risk 66/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
94%
KEV
Not listed

Published

April 22, 2016

Last Modified

June 17, 2026

References (10)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 22× 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.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-08-19 16:59 UTCEPSS rescore
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  75. 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 June 17, 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 7% probability of exploitation in the next 30 days, which ranks it in the top 6.3% of all scored CVEs.
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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