CVE-2023-26829Public exploitNetwork attack vector

Account takeover via unauthenticated password reset

Published Mar 31, 2023 · Updated Feb 18, 2025

Authentication bypass in Gladinet CentreStack before 13.5.9808 allows remote attackers to take over any valid account through password reset. The change-password controller accepts an unauthenticated request whose modified hfTicket value names the target user, then replaces that account's password without validating the prior password. Only a valid username is required, and takeover inherits the selected account's permissions, including administrative access when an administrator is targeted.

CVSS severity9.8
Critical
EPSS probability1.21%
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 Gladinet CentreStack before 13.5.9808 allows remote attackers to take over any valid account through password reset. The change-password controller accepts an unauthenticated request whose modified hfTicket value names the target user, then replaces that account's password without validating the prior password. Only a valid username is required, and takeover inherits the selected account's permissions, including administrative access when an administrator is targeted.

The record

CVE
CVE-2023-26829
Published
Mar 31, 2023
Updated
Feb 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-863Incorrect Authorization
T1078Valid Accounts

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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