CVE-2020-22284

Name: CVE-2020-22284
Creator: NVD / NIST
Published: 2021-07-22T20:15:07.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.17%

Last modified Jun 17, 2026

CVE-2020-22284 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.. EPSS estimates a 1.17% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.17%

63.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Lwip Project	Lwip	2.1.2

References

https://savannah.nongnu.org/bugs/index.php?58554Patch, Third Party Advisory
https://savannah.nongnu.org/bugs/index.php?58554Patch, Third Party Advisory

Timeline

Published: Jul 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22284?

How severe is CVE-2020-22284?

CVE-2020-22284 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22284?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-22284?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST