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Improper AuthenticationWeakness · CWE-287

CVE-2025-26326

HIGH · 8.8 CVSS v3.1 Published 2025-02-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was identified in the NVDA Remote (version 2.6.4) and Tele NVDA Remote (version 2025.3.3) remote connection add-ons, which allows an attacker to obtain total control of the remote system by guessing a weak password. The problem occurs because these add-ons accept any password entered by the user and do not have an additional authentication or computer verification mechanism. Tests indicate that more than 1,000 systems use easy-to-guess passwords, many with less than 4 to 6 characters, including common sequences. This allows brute force attacks or trial-and-error attempts by malicious invaders. The vulnerability can be exploited by a remote attacker who knows or can guess the password used in the connection. As a result, the attacker gains complete access to the affected system and can execute commands, modify files, and compromise user security.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

NVDA Remote (2.6.4) and Tele NVDA Remote (2025.3.3) accept any user-provided password without additional authentication or verification mechanisms. This allows attackers to gain complete system control via brute force or guessable passwords (under 4-6 characters, common sequences).

MitigationEnforce strong password policies (minimum length, complexity requirements) and implement additional authentication mechanisms such as two-factor authentication or computer verification before granting remote access.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed NVDA Remote product and version
    Check the installed add-on version in NVDA's Add-ons Manager (NVDA menu > Tools > Manage Extensions) or look for version information in the add-on's about/settings dialog
    Affected if The installed version is NVDA Remote 2.6.4 or Tele NVDA Remote 2025.3.3 (or any version within these major releases that has not been patched)
  2. Examine the configured remote access password
    Open the NVDA Remote add-on settings (NVDA menu > Tools > Remote > Connect or Configure) and review the current password length and complexity
    Affected if The password is fewer than 4-6 characters long, consists of common sequences (1234, password, admin, etc.), or uses simple patterns without special characters or numbers
  3. Verify if additional authentication mechanisms are enabled
    Check the NVDA Remote settings for computer verification, 2FA, or other secondary authentication layers that require approval before granting remote access
    Affected if No additional authentication mechanisms (such as computer verification, 2FA, or access approval prompts) are configured or enabled in the remote settings

The environment is affected if running NVDA Remote 2.6.4 or Tele NVDA Remote 2025.3.3 with a weak password (under 4-6 characters or common patterns) and without additional authentication safeguards.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Enforce strong password policies (minimum length, complexity requirements) and implement additional authentication mechanisms such as two-factor authentication or computer verification before granting remote access.

Recommended fix Moderate confidence

Check nvdaremote.com or nvda-addons.org for NVDA Remote and Tele NVDA Remote versions newer than 2.6.4 and 2025.3.3 respectively

  1. Check the NVDA Remote add-on version currently installed by opening NVDA menu > Tools > Remote > Help > About
  2. Visit the NVDA Remote official page at nvdaremote.com or the add-ons page at nvda-addons.org to identify if a newer version has been released that addresses the weak authentication vulnerability
  3. If a newer version is available, download and install the updated add-on from the official source
  4. After upgrading, configure a strong password for remote connections - use a password with at least 12 characters including uppercase, lowercase, numbers, and special characters
  5. Consider enabling any additional security features or two-factor authentication mechanisms if provided in the updated version
  6. Restart NVDA for changes to take effect
Caveat Review release notes for any changes to remote connection functionality or compatibility requirements with NVDA versions

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
24.0 hours of engineering $4,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-26326 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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