CVE-2020-22283

liblwip0: A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundatio...

CVE-2020-22283 is fixed in liblwip0 on 1 platform by liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1 (version 2.1.2+dfsg1-4ubuntu0.1~esm1), released May 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

Medium

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0142

72nd percentile

A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
liblwip0 · Ubuntu 20.04 LTS (focal)	2.1.2+dfsg1-4ubuntu0.1~esm1	liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1	May 18, 2026

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