🛡️ USN-8423-1 — lwip

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

lwip vulnerabilities

It was discovered that lwIP contained a buffer overflow in the EAP

authentication handling code. An attacker could possibly use this issue

to trigger a buffer overflow, resulting in arbitrary code execution or a

denial of service. This issue only affected Ubuntu 20.04 LTS.

(CVE-2020-8597)

It was discovered that lwIP incorrectly handled certain ICMPv6 or

6LoWPAN packets. An attacker could possibly use this issue to trigger a

buffer overflow, resulting in information disclosure. This issue only

affected Ubuntu 20.04 LTS. (CVE-2020-22283, CVE-2020-22284)

It was discovered that lwIP did not properly validate certain SNMPv3

authentication parameters. An attacker could possibly use this issue to

trigger a stack-based buffer overflow, resulting in arbitrary code

execution or a denial of service. (CVE-2026-8836)

Affected software

USN-8423-1 is recorded against 1 package.

  • lwip (fixed in 2.2.1+dfsg1-4ubuntu0.1~esm1)

Timeline and source

Published on 11 June 2026 and last revised on 18 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-11
Updated 2026-08-12
Modified 2026-06-18
Fix URL N/A

Affected Packages

Software From version Fixed in
lwip — 2.2.1+dfsg1-4ubuntu0.1~esm1

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