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CVE-2023-41220

18
FAUCET Score

CVE-2023-41220 is a stack-based buffer overflow vulnerability in D-Link DIR-3040 routers, specifically within the prog.cgi binary. This flaw allows authenticated, network-adjacent attackers to execute arbitrary code with root privileges due to insufficient validation of user-supplied input. Rated 6.8 MEDIUM, the vulnerability requires high privileges and network access for exploitation, leading to high impact on confidentiality, integrity, and availability. Currently, there is no public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.20b03CPE matchmatch criteria
cpe:2.3:o:dlink:dir-3040_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 62nd percentile among its peer group of 399 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, 0.0 Mastodon, and 0.1 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

supportannouncement.us.dlink.com / announcement/publication.aspx
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-23-1328
Third Party Advisory