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CVE-2023-43869

27
FAUCET Score

CVE-2023-43869 is a critical buffer overflow vulnerability affecting D-Link DIR-619L B1 routers running firmware version 2.02, specifically within the formSetWAN_Wizard56 function. With a CVSS score of 9.8, this vulnerability allows unauthenticated remote attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability. While the EPSS score is low and there is no evidence of active exploitation, public exploit code, or significant community discussion, the high FAUCET Risk Score of 83/100 indicates a significant potential threat.

Impacted Technologies

VendorProductVersion(s)CPE
2.02CPE matchmatch criteria
cpe:2.3:o:dlink:dir-619l_firmware:2.02:*:*:*:*:*:*:*

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
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 43rd percentile among its peer group of 36,897 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

No media coverage found for this CVE.

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

github.com / YTrick/vuln/blob/main/DIR-619L%20Buffer%20Overflow_1.md
ExploitThird Party Advisory
dlink.com / en/security-bulletin
Vendor Advisory