CVE-2016-6503

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 6%CVSS: 5.9Exploit: NoneExposed: 0

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

The CORBA IDL dissectors in Wireshark 2.x before 2.0.5 on 64-bit Windows platforms do not properly interact with Visual C++ compiler options, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity59% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
93.0%
KEV
Not listed

Published

August 6, 2016

Last Modified

May 6, 2026

References (14)

Data Freshness Timeline

(refreshed 14× in last 7d / 42× 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.

  1. 2026-07-24 14:13 UTCEPSS rescore
  2. 2026-07-23 14:15 UTCEPSS rescore
  3. 2026-07-23 01:23 UTCEG score recompute
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  65. 2026-05-22 19:07 UTCEG score recompute
  66. 2026-05-22 19:07 UTCGHSA enrichment
  67. 2026-05-20 22:37 UTCEPSS rescore
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  70. 2026-05-20 22:36 UTCOSV refresh
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Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-40196✓ verified
    First seen Aug 3, 2016

    Wireshark 2.0.0 < 2.0.4 - CORBA IDL Dissectors Denial of Service

    Open source ↗

Frequently asked(5)

What is CVE-2016-6503?
CVE-2016-6503 is a medium vulnerability published on August 6, 2016. The CORBA IDL dissectors in Wireshark 2.x before 2.0.5 on 64-bit Windows platforms do not properly interact with Visual C++ compiler options, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.
When was CVE-2016-6503 disclosed?
CVE-2016-6503 was first published in the National Vulnerability Database on August 6, 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-2016-6503 actively exploited?
CVE-2016-6503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-6503?
CVE-2016-6503 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2016-6503?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-6503, 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.

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