CVE-2017-3826

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0

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

A vulnerability in the Stream Control Transmission Protocol (SCTP) decoder of the Cisco NetFlow Generation Appliance (NGA) with software before 1.1(1a) could allow an unauthenticated, remote attacker to cause the device to hang or unexpectedly reload, causing a denial of service (DoS) condition. The vulnerability is due to incomplete validation of SCTP packets being monitored on the NGA data ports. An attacker could exploit this vulnerability by sending malformed SCTP packets on a network that is monitored by an NGA data port. SCTP packets addressed to the IP address of the NGA itself will not trigger this vulnerability. An exploit could allow the attacker to cause the appliance to become unresponsive or reload, causing a DoS condition. User interaction could be needed to recover the device using the reboot command from the CLI. The following Cisco NetFlow Generation Appliances are vulnerable: NGA 3140, NGA 3240, NGA 3340. Cisco Bug IDs: CSCvc83320.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
74.8%
KEV
Not listed

Published

March 1, 2017

Last Modified

May 13, 2026

References (6)

Data Freshness Timeline

(refreshed 13× in last 7d / 40× 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 101 total refreshes for this CVE.

  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:29 UTCEG score recompute
  3. 2026-07-22 22:09 UTCEG score recompute
  4. 2026-07-22 14:04 UTCEPSS rescore
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  6. 2026-07-21 15:21 UTCEPSS rescore
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  20. 2026-07-12 05:43 UTCEPSS rescore
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  24. 2026-07-07 13:42 UTCEPSS rescore
  25. 2026-07-06 16:24 UTCEPSS rescore
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  1. 2026-07-06 16:24 UTCEPSS rescore
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  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-02 16:54 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
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  18. 2026-06-23 21:30 UTCEPSS rescore
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  21. 2026-06-21 14:54 UTCEPSS rescore
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  23. 2026-06-21 01:57 UTCEPSS rescore
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  25. 2026-06-19 19:23 UTCEPSS rescore
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  27. 2026-06-18 17:50 UTCEPSS rescore
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  31. 2026-06-15 17:45 UTCEPSS rescore
  32. 2026-06-14 23:14 UTCEPSS rescore
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  36. 2026-06-10 13:19 UTCEPSS rescore
  37. 2026-06-08 14:14 UTCEPSS rescore
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  39. 2026-06-07 15:22 UTCEPSS rescore
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  41. 2026-06-06 13:45 UTCEPSS rescore
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  44. 2026-06-05 06:08 UTCEPSS rescore
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  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
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  52. 2026-05-31 00:14 UTCEPSS rescore
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  54. 2026-05-29 13:41 UTCEPSS rescore
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  57. 2026-05-27 13:38 UTCEPSS rescore
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  63. 2026-05-22 21:15 UTCEPSS rescore
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  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-22 15:48 UTCEG score recompute
  69. 2026-05-22 15:48 UTCGHSA enrichment
  70. 2026-05-21 22:40 UTCEPSS rescore
  71. 2026-05-20 22:37 UTCEPSS rescore
  72. 2026-05-20 22:37 UTCEPSS rescore
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  74. 2026-05-20 11:21 UTCEPSS rescore
  75. 2026-05-20 11:21 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-3826?
CVE-2017-3826 is a high vulnerability published on March 1, 2017. A vulnerability in the Stream Control Transmission Protocol (SCTP) decoder of the Cisco NetFlow Generation Appliance (NGA) with software before 1.1(1a) could allow an unauthenticated, remote attacker to cause the device to hang or unexpectedly reload, causing a denial of service (DoS) condition.…
When was CVE-2017-3826 disclosed?
CVE-2017-3826 was first published in the National Vulnerability Database on March 1, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-3826 actively exploited?
CVE-2017-3826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-3826?
CVE-2017-3826 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-3826?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-3826, 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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