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CVE-2023-20820

21
FAUCET Score

CVE-2023-20820 is a high-severity command injection vulnerability in the wlan service of MediaTek and OpenWrt products, stemming from improper input validation. This flaw allows for remote code execution with System privileges, requiring no user interaction for exploitation. While the CVSS score is 7.2, indicating significant impact (confidentiality, integrity, availability), there is currently no public exploit code, active exploitation, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
19.07.0CPE matchmatch criteria
cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:*
21.02.0CPE matchmatch criteria
cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 54th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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

Remediation records are not available for this CVE.

References

corp.mediatek.com / product-security-bulletin/September-2023
Vendor Advisory