CVE-2014-2146

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0

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

The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these sessions, aka Bug IDs CSCun94946 and CSCun96847.

CVSS v3
6.5
EG Score
6.5(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
Severity65% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
66.4%
KEV
Not listed

Published

September 22, 2016

Last Modified

May 6, 2026

References (4)

Data Freshness Timeline

(refreshed 10× in last 7d / 35× 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 14:14 UTCEPSS rescore
  2. 2026-07-23 01:12 UTCEG score recompute
  3. 2026-07-23 00:15 UTCEG score recompute
  4. 2026-07-22 21:54 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
  6. 2026-07-21 15:21 UTCEPSS rescore
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  1. 2026-07-02 15:21 UTCEPSS rescore
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  3. 2026-06-30 23:19 UTCEPSS rescore
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  21. 2026-06-18 17:49 UTCEPSS rescore
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  25. 2026-06-16 17:49 UTCEPSS rescore
  26. 2026-06-16 17:49 UTCEPSS rescore
  27. 2026-06-16 17:49 UTCEPSS rescore
  28. 2026-06-15 17:44 UTCEPSS rescore
  29. 2026-06-14 23:14 UTCEPSS rescore
  30. 2026-06-13 22:57 UTCEPSS rescore
  31. 2026-06-12 23:08 UTCEPSS rescore
  32. 2026-06-11 13:56 UTCEPSS rescore
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  43. 2026-06-04 13:09 UTCEPSS rescore
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  45. 2026-06-02 20:10 UTCEPSS rescore
  46. 2026-06-02 20:10 UTCEPSS rescore
  47. 2026-06-01 13:49 UTCEPSS rescore
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  49. 2026-05-31 22:28 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
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  53. 2026-05-29 13:41 UTCEPSS rescore
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  55. 2026-05-28 13:42 UTCEPSS rescore
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  65. 2026-05-22 21:15 UTCEPSS rescore
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  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-22 18:41 UTCEG score recompute
  69. 2026-05-22 18:41 UTCGHSA enrichment
  70. 2026-05-21 22:39 UTCEPSS rescore
  71. 2026-05-20 22:37 UTCEPSS rescore
  72. 2026-05-20 22:37 UTCEPSS rescore
  73. 2026-05-20 11:21 UTCEPSS rescore
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  75. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(5)

What is CVE-2014-2146?
CVE-2014-2146 is a medium vulnerability published on September 22, 2016. The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these…
When was CVE-2014-2146 disclosed?
CVE-2014-2146 was first published in the National Vulnerability Database on September 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-2014-2146 actively exploited?
CVE-2014-2146 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2014-2146?
CVE-2014-2146 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2014-2146?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-2146, 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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