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CVE-2023-39638

30
FAUCET Score

CVE-2023-39638 is a critical command injection vulnerability affecting D-Link DIR-859 A1 routers running firmware versions 1.05 and 1.06B01 Beta01. This flaw, located in the lxmldbc_system function at /htdocs/cgibin, allows an unauthenticated attacker to execute arbitrary commands remotely with high impact on confidentiality, integrity, and availability. While there are no known active exploits or public exploit modules like Metasploit or ExploitDB, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
1.05CPE matchmatch criteria
cpe:2.3:o:dlink:dir-859_a1_firmware:1.05:*:*:*:*:*:*:*
1.06CPE matchmatch criteria
cpe:2.3:o:dlink:dir-859_a1_firmware:1.06:beta01:*:*:*:*:*:*

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
3.02%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0302 is in the 77th 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 / mmmmmx1/dlink/blob/main/dir-859/readme.md
ExploitThird Party Advisory
dlink.com / en/security-bulletin
Product
dlink.com.cn / techsupport/ProductInfo.aspx
Product