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Public proof of concept

CVE-2019-6989

A public proof of concept exists; no exploitation attested.

  • Published2019-06-06
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

TP-Link TL-WR940N is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the ipAddrDispose function. By sending specially crafted ICMP echo request packets, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges.

Timeline

dates in UTC
  1. 2019-04-09Exploit-DB entryExploit-DB

Versions per branch

NVD
Tp-link tl-wr940n firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Tp-link tl-wr941nd firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-04 22:56 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-46678
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.08.8read 2026-10-23
  • NVDCVSS 2.09read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score11.4 %read 2026-11-04
  • Exploit-DBdetectionread 2026-11-04

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2019-06-06
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-6989?

TP-Link TL-WR940N is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the ipAddrDispose function. By sending specially crafted ICMP echo request packets, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges.

Is CVE-2019-6989 actively exploited?

Active exploitation of CVE-2019-6989 has not been confirmed. Its EPSS score was 11.4% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-6989?

CVE-2019-6989 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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