Which CVEs affect lwIP 1.1.1?
| CVE | Severity | CVSS | Fixed from | Note |
|---|---|---|---|---|
| CVE-2020-8597 | critical | 9.8 | not stated | per vulnerability databases |
| CVE-2026-15340 | critical | 9.3 | not stated | per vulnerability databases |
| CVE-2026-87121 | critical | 9.3 | not stated | per vulnerability databases |
| CVE-2026-8836 | high | 8.9 | not stated | per vulnerability databases |
| CVE-2026-91018 | high | 8.7 | not stated | per vulnerability databases |
| CVE-2020-22283 | high | 7.5 | not stated | per vulnerability databases |
| CVE-2020-22284 | high | 7.5 | not stated | per vulnerability databases |
| CVE-2026-112062 | medium | 6.0 | not stated | per vulnerability databases |
| CVE-2014-4883 | medium | 4.3 | not stated | per vulnerability databases |
What changed against lwIP 1.1.0?
No CVE of 1.1.0 dropped out in 1.1.1.
No CVE was added in 1.1.1.
What does the number mean for a device?
Counted are the CVEs public sources name for lwIP version 1.1.1 (NVD, OSV, Vendor advisories). "Confirmed by the vendor" means the CVE record or advisory comes from the vendor itself and names this version as affected. Third-party records are counted but not marked as confirmed.
Whether a CVE is exploitable in a given device depends on which functions of the library the build contains and how they are configured. The list shows what is known for the version.
Licence notes of the sources: OSV: CC BY 4.0.
Questions
How many CVEs does lwIP 1.1.1 have?
As of 13 Nov 2026, 9 CVEs are known for lwIP 1.1.1, 3 critical and 4 high. 2.1.2, the newest listed version, still carries 8 of them.
From which version are the CVEs of lwIP 1.1.1 fixed?
No newer listed version is free of all 9 CVEs. The "Fixed from" column names the fix version per CVE for this release line where a source states one.