D-link DIR-823G Web boa.conf least privilege violation

published 2026-07-09 4 mo ago modified 2026-10-25 15 d ago also EUVD-2026-42692

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

A weakness has been identified in D-link DIR-823G 1.0.2B05_20181207. Affected by this vulnerability is an unknown functionality of the file /etc/boa/boa.conf of the component Web Interface. Executing a manipulation can lead to least privilege violation. The attack can be launched remotely. The attack requires a high level of complexity. The exploitation appears to be difficult. The exploit has been made available to the public and could be used for attacks.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-07-10)

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

app.notion.com https://app.notion.com/p/DIR823G-V1-0-2B05_20181207-37a1f5ba989080f2a043c60d2cfc7499?source=copy_link referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.7	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	3.0	7.5	CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	2.0	7.1	AV:N/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
CNA	4.0	6.8	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	7.1	AV:N/AC:H/Au:S/C:C/I:C/A:C

Affected products

D-link DIR-823G

Classification

Weakness

CWE-272 Least Privilege Violation
CWE-266 Incorrect Privilege Assignment

References

app.notion.com /p/DIR823G-V1-0-2B05_20181207-37a1f5ba989080f2a043c60d2cfc7499?source=copy_link
exploit, third-party-advisory
vuldb.com /vuln/377213
vdb-entry, third-party-advisory
vuldb.com /vuln/377213/cti
signature, permissions-required, vdb-entry
vuldb.com /cve/CVE-2026-15270
third-party-advisory, vdb-entry
vuldb.com /submit/852314
third-party-advisory, vdb-entry
dlink.com /
product

Sources

CVE List CVE-2026-15270
NVD CVE-2026-15270

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary