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CVE-2020-10063

20
FAUCET Score

CVE-2020-10063 describes a denial-of-service vulnerability in Zephyr RTOS versions 2.2.0 and later, where a remote attacker can crash the system by sending specially crafted CoAP packets. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low complexity and no user interaction, leading to a complete loss of availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2.0CPE matchmatch criteria
cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 59th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

docs.zephyrproject.org / latest/security/vulnerabilities.html
Vendor Advisory
github.com / zephyrproject-rtos/zephyr/pull/24435
PatchThird Party Advisory
github.com / zephyrproject-rtos/zephyr/pull/24530
PatchThird Party Advisory
github.com / zephyrproject-rtos/zephyr/pull/24531
PatchThird Party Advisory
github.com / zephyrproject-rtos/zephyr/pull/24535
PatchThird Party Advisory
zephyrprojectsec.atlassian.net / browse/ZEPSEC-55
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