CVE-2020-23593Public exploitNetwork attack vector

Information disclosure via forged syslog configuration

Published Nov 23, 2022 · Updated Apr 29, 2025

Cross-site request forgery in OPTILINK OP-XT71000N hardware 2.2 with firmware OP_V3.3.1-191028 allows remote attackers to enable syslog forwarding. The /mgm_log_cfg.asp endpoint accepts forged configuration requests and enables Remote or Both mode without verifying the request origin. A user must be induced to submit the request, after which device events are forwarded to a configured remote syslog host and port.

CVSS severity6.5
Medium
EPSS probability0.44%
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 hardware 2.2 with firmware OP_V3.3.1-191028 allows remote attackers to enable syslog forwarding. The /mgm_log_cfg.asp endpoint accepts forged configuration requests and enables Remote or Both mode without verifying the request origin. A user must be induced to submit the request, after which device events are forwarded to a configured remote syslog host and port.

The record

CVE
CVE-2020-23593
Published
Nov 23, 2022
Updated
Apr 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1048
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

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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)
T1048Exfiltration Over Alternative Protocol

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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