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CVE-2024-20017

59
FAUCET Score

CVE-2024-20017 is a critical vulnerability affecting MediaTek and OpenWrt products, stemming from an out-of-bounds write in the WLAN service due to improper input validation. This flaw carries a CVSS score of 9.8, indicating a severe risk of remote code execution without requiring user interaction or additional privileges. While not yet in the KEV catalog, extensive community discussion and recent publications detail multiple exploitation methods, highlighting a high potential for active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.4.0.1CPE matchmatch criteria
cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*
<= 7.6.7.0CPE matchmatch criteria
cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*
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

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
46.33%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.4633 is in the 96th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.coffinsec.com / 0day/2024/08/30/exploiting-CVE-2024-20017-four-different-ways.html
ExploitTechnical DescriptionThird Party Advisory
blog.sonicwall.com / en-us/2024/09/critical-exploit-in-mediatek-wi-fi-chipsets-zero-click-vulnerability-cve-2024-20017-threatens-routers-and-smartphones
ExploitThird Party Advisory
news.ycombinator.com / item
Third Party Advisory
corp.mediatek.com / product-security-bulletin/March-2024
Vendor Advisory