lwIP has 2 CVEs on record. 2 were published in the last 90 days. The median CVSS is 9.3 (critical), with 1 rated critical.
CVEs per month
Last 12 months, by publish date
1025/101125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/09
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 9.3
- Publish → KEV
- —
- Last 90 days
- 2 prev 0
2
Total CVEs
1
Critical
0
CISA KEV
0
Exploited
Worst active — by depth score
CVE-2026-87121Critical· 9.8lwIP 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.54CVE-2026-91018High· 8.8lwIP (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.48
lwIP vulnerabilities
CVEs affecting lwIP, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2026-91018High· 8.8lwIP (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 (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.
▾ TwilightlwIP · lwIP APIvia NVD
CVE-2026-87121Critical· 9.8lwIP 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 is vulnerable to an out-of-bounds write, which may allow an attacker to gain full code execution on the device.
▾ MidnightlwIP · TCP/IP Stack MQTTvia NVD