CVE-2020-23592Public exploitNetwork attack vector

Privilege escalation via factory reset CSRF

Published Nov 23, 2022 · Updated Apr 29, 2025

Cross-site request forgery in OPTILINK OP-XT71000N firmware OP_V3.3.1-191028 allows remote attackers to reset ONU to factory defaults. The /mgm_dev_reset.asp endpoint accepts a forged request without CSRF protection and performs the reset operation. An unauthenticated remote attacker needs a victim browser session; after reset, default credentials permit privileged login and configuration takeover.

CVSS severity8.8
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in OPTILINK OP-XT71000N firmware OP_V3.3.1-191028 allows remote attackers to reset ONU to factory defaults. The /mgm_dev_reset.asp endpoint accepts a forged request without CSRF protection and performs the reset operation. An unauthenticated remote attacker needs a victim browser session; after reset, default credentials permit privileged login and configuration takeover.

The record

CVE
CVE-2020-23592
Published
Nov 23, 2022
Updated
Apr 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

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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