What is CVE-2020-25111?

CVE-2020-25111 is a critical-severity vulnerability in Contiki-Os, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-12-11.

How severe is CVE-2020-25111?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-25111 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Contiki-Os

CVE-2020-25111

An issue was discovered in the IPv6 stack in Contiki through 3.0. There is an insufficient check for the IPv6 header length. This leads to Denial-of-Service and potential Remote Code Execution via a crafted ICMPv6 echo packet.

Vulnerability class: Buffer Overflow

EPSS: 0.201 (97.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Contiki-os
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-25111?: CVE-2020-25111 is a critical-severity vulnerability in Contiki-Os, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-12-11.
How severe is CVE-2020-25111?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-25111 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.