CVE-2018-14938

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha. There is an integer overflow in the function handle_prism during caplen processing. If the caplen is less than 144, one can cause an integer overflow in the function handle_80211, which will result in an out-of-bounds read and may allow access to sensitive memory (or a denial of service).

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity91% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
84.7%
KEV
Not listed

Published

August 5, 2018

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 19, 2026
Patch available. Sources: github_commit.
generic Patch Available

[SECURITY] [DLA 2468-1] tcpflow security update

https://lists.debian.org/debian-lts-announce/2020/11/msg00046.html
generic

A integer overflow vulnerability in wifipacp.cpp · Issue #182 · simsong/tcpflow · GitHub

https://github.com/simsong/tcpflow/issues/182
github_commit Patch Available

commit a4e1cd14eb5c (simsong/tcpflow)

Patch available: simsong/tcpflow tcpflow-1.5.0 (contains commit a4e1cd14eb5c)

https://github.com/simsong/tcpflow/commit/a4e1cd14eb5ccc51ed271b65b3420f7d692c40eb

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntutcpflow-nox (1.4.5+repack1-1ubuntu0.1) @ xenial2026-05-28ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 14:15 UTCEPSS rescore
  3. 2026-07-23 01:33 UTCEG score recompute
  4. 2026-07-22 22:13 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
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  7. 2026-07-21 07:47 UTCOSV refresh
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  4. 2026-07-04 02:56 UTCOSV refresh
  5. 2026-07-02 16:54 UTCEPSS rescore
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  33. 2026-06-15 14:43 UTCOSV refresh
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  44. 2026-06-07 15:22 UTCEPSS rescore
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  64. 2026-05-28 04:16 UTCEG score recompute
  65. 2026-05-28 04:16 UTCVendor advisory
  66. 2026-05-28 04:16 UTCGHSA enrichment
  67. 2026-05-27 13:38 UTCEPSS rescore
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  73. 2026-05-25 22:16 UTCOSV refresh

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Frequently asked(5)

What is CVE-2018-14938?
CVE-2018-14938 is a critical vulnerability published on August 5, 2018. An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha. There is an integer overflow in the function handleprism during caplen processing. If the caplen is less than 144, one can cause an integer overflow in the function handle80211, which will result in an out-of-bounds…
When was CVE-2018-14938 disclosed?
CVE-2018-14938 was first published in the National Vulnerability Database on August 5, 2018, 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-2018-14938 actively exploited?
CVE-2018-14938 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-14938?
CVE-2018-14938 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2018-14938?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-14938, 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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