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OpenAdvisories

Vendor

lwIP

4 known vulnerabilities.

lwIP at a glance

Last 12 months
4
Critical · all time
1
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 2 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 2 vulnerabilities, 1 critical Sep October 2026: 2 vulnerabilities November 2026: 0 vulnerabilities
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Products

lwIP 2 lwIP API 1 TCP/IP Stack MQTT 1 API 0 MQTT Client Application 0

Latest advisories

  • Critical max 9.8
    ICSA-26-265-01 1 CVE

    lwIP TCP/IP Stack MQTT Client Application

    Successful exploitation of this vulnerability could allow an attacker to gain full code execution on the device.

    lwIP
  • High max 8.8
    ICSA-26-265-02 1 CVE

    lwIP (Lightweight IP)

    Successful exploitation of this vulnerability could result in a system crash, a DoS, or memory corruption, which could lead to code execution on the victim system.

    lwIP
All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • Medium 5.3
    CVE-2026-119053

    lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()

    lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf->len instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send frag…

    lwIP lwIP lwip lwip Debian Ubuntu
  • Medium 5.9
    CVE-2026-112062

    lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handler

    lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answer…

    lwIP lwIP lwip lwip Debian Ubuntu
  • High 8.8
    CVE-2026-91018

    Double Free in lwIP (lightweight IP)

    lwIP (Lightweight IP) has a double free vulnerability, which could crash the system, cause a DoS, memory corruption, or allow code execution on the victim system.

    lwIP lwIP API lwip lwip Debian Ubuntu
  • Critical 9.8
    CVE-2026-87121

    Out-of-bounds write in lwIP TCP/IP Stack MQTT Client Application

    lwIP TCP/IP Stack MQTT is vulnerable to an out-of-bounds write, which may allow an attacker to gain full code execution on the device.

    lwIP TCP/IP Stack MQTT lwip lwip Debian Ubuntu