CVE-2019-1676

HIGHNVD 6.87.5▲
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 6.8; sources differ by 0.7.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 6.8Exploit: None knownExposed: 0

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

A vulnerability in the Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Cisco Meeting Server. The vulnerability is due to insufficient validation of Session Description Protocol (SDP) messages. An attacker could exploit this vulnerability by sending a crafted SDP message to the CMS call bridge. An exploit could allow the attacker to cause the CMS to reload, causing a DoS condition for all connected clients. Versions prior to 2.3.9 are affected.

CVSS v3
6.8
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

February 8, 2019

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 26× 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 117 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  24. 2026-07-23 14:15 UTCEPSS rescore
  25. 2026-07-23 01:41 UTCEG score recompute
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  1. 2026-07-22 22:21 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
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  5. 2026-07-20 17:04 UTCEPSS rescore
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  14. 2026-07-15 16:55 UTCEPSS rescore
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  16. 2026-07-13 22:27 UTCEPSS rescore
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  19. 2026-07-12 05:43 UTCEPSS rescore
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  21. 2026-07-11 08:24 UTCEPSS rescore
  22. 2026-07-11 08:24 UTCEPSS rescore
  23. 2026-07-09 19:06 UTCEPSS rescore
  24. 2026-07-08 15:11 UTCEPSS rescore
  25. 2026-07-07 13:43 UTCEPSS rescore
  26. 2026-07-06 16:25 UTCEPSS rescore
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  43. 2026-06-23 21:31 UTCEPSS rescore
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  45. 2026-06-22 14:23 UTCEPSS rescore
  46. 2026-06-21 14:54 UTCEPSS rescore
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  48. 2026-06-21 01:57 UTCEPSS rescore
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  50. 2026-06-19 19:23 UTCEPSS rescore
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  52. 2026-06-18 17:50 UTCEPSS rescore
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  63. 2026-06-08 14:15 UTCEPSS rescore
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  66. 2026-06-06 13:45 UTCEPSS rescore
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  72. 2026-06-04 13:10 UTCEPSS rescore
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  74. 2026-06-02 20:11 UTCEPSS rescore
  75. 2026-06-02 20:11 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-1676?
CVE-2019-1676 is a high vulnerability published on February 8, 2019. A vulnerability in the Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Cisco Meeting Server. The vulnerability is due to insufficient validation of Session…
When was CVE-2019-1676 disclosed?
CVE-2019-1676 was first published in the National Vulnerability Database on February 8, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-1676 actively exploited?
CVE-2019-1676 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 23.0% of all scored CVEs.
What is the CVSS score of CVE-2019-1676?
CVE-2019-1676 has a CVSS v3 base score of 6.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.
How do I remediate CVE-2019-1676?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-1676, 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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