CVE-2023-36090Network attack vector

Unauthenticated privilege escalation through phpcgi

Published Jul 31, 2023 · Updated Aug 2, 2024

Authentication bypass in D-Link DIR-885L firmware 1.02b01 allows remote attackers to gain escalated privileges through phpcgi. D-Link has not published how phpcgi incorrectly authenticates or authorizes crafted requests. Network access to the router web interface is sufficient, and successful exploitation grants elevated privileges on the router.

CVSS severity9.8
Critical
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in D-Link DIR-885L firmware 1.02b01 allows remote attackers to gain escalated privileges through phpcgi. D-Link has not published how phpcgi incorrectly authenticates or authorizes crafted requests. Network access to the router web interface is sufficient, and successful exploitation grants elevated privileges on the router.

The record

CVE
CVE-2023-36090
Published
Jul 31, 2023
Updated
Aug 2, 2024
Vendor
D-Link Corporation
Product
DIR-885L Firmware
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link Corporation · DIR-885L Firmwareversion=1.02

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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