Which versions of Dir 823G are affected by CVE-2026-15270?

D-Link DIR-823G routers with firmware 1.0.2B05_20181207 contain a web server configuration vulnerability allowing authenticated remote attackers to compromise device and network integrity and…

Is there a public PoC exploit available for CVE-2026-15270?

Yes, a public proof-of-concept exploit is available for CVE-2026-15270. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2026-15270?

Within 24 hours: Inventory all D-Link DIR-823G devices on the network and verify firmware versions; restrict administrative interface access (TCP 80, 443) via firewall rules to authorized administrators only; disable remote management if not operationally required. Within 7 days: Contact D-Link support for firmware patch availability and end-of-support status; if patches are unavailable, initiate procurement for replacement routers with active vendor support; enable administrative access logging. Within 30 days: Deploy patched firmware to all vulnerable devices or complete replacement with modern router models; establish firmware update policy for all network equipment to prevent future accumulation of unsupported hardware.

Dir 823G CVE-2026-15270

Q: What is the CVSS score of CVE-2026-15270?

CVE-2026-15270 has a CVSS 4.0 base score of 6.8 (Medium). CVSS vector: 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. EPSS exploitation probability: 0.4%.

EUVD-2026-42692 MEDIUM

Least Privilege Violation (CWE-272)

2026-07-09 VulDB

GHSA-fcxp-r92v-x7h2

D-Link Information Disclosure Dir 823G

6.8

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

6.8 HIGH

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

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Jul 09, 2026 - 20:22 NVD

HIGH MEDIUM

CVSS changed

Jul 09, 2026 - 20:22 NVD

7.7 (HIGH) 6.8 (MEDIUM)

Analysis Generated

Jul 09, 2026 - 20:20 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Least-privilege violation in the D-Link DIR-823G router (firmware 1.0.2B05_20181207) stems from insecure configuration of the Boa web server via /etc/boa/boa.conf, allowing an authenticated remote attacker to abuse over-broad privileges to compromise confidentiality, integrity, and availability. Publicly available exploit code exists, but the CVSS 4.0 vector rates attack complexity high (AC:H) and vendor guidance notes exploitation is difficult; there is no public exploit identified as actively exploited (not in CISA KEV). EPSS data was not supplied, but the low-privilege network vector combined with full CIA impact makes this a meaningful risk on exposed devices.