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Vulnerability record · CVE-2020-24335 · published 2 February 2021

CVE-2020-24335: Uip project uip out-of-bounds read vulnerability

Uip Project · Uip

An issue was discovered in uIP through 1.0, as used in Contiki and Contiki-NG. Domain name parsing lacks bounds checks, allowing an attacker to corrupt memory with crafted DNS packets.

7.5 CVSS 3.1 High EPSS 3.0% · top 13.0% CWE-125 · Out-of-bounds read
7.5CVSS 3.1 base score, v2 5.0
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in uIP through 1.0, as used in Contiki and Contiki-NG. Domain name parsing lacks bounds checks, allowing an attacker to corrupt memory with crafted DNS packets.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/adamdunkels/uip ProductThird Party Advisory
https://github.com/contiki-ng/contiki-ng ProductThird Party Advisory
https://github.com/contiki-os/contiki ProductThird Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 Third Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/815128 Third Party AdvisoryUS Government Resource
https://github.com/adamdunkels/uip ProductThird Party Advisory
https://github.com/contiki-ng/contiki-ng ProductThird Party Advisory
https://github.com/contiki-os/contiki ProductThird Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 Third Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/815128 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-24335), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.