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VulnerabilityPublished

CVE-2026-4828: Devolutions Server · CWE-1390

Affects Devolutions ServerSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
DevolutionsServerAffected
  • <=2026.1.11
Fixed in–

AI-suggested

  1. Immediately monitor authentication logs for unusual login patterns, especially OAuth login attempts that may indicate crafted requests bypassing MFA.
  2. Enforce strict credential hygiene policies, including regular password changes and detection of credential leaks, to reduce the chance of attackers obtaining valid credentials.
  3. Implement network-level controls such as IP whitelisting or VPN requirements to limit access to Devolutions Server interfaces.
  4. Use additional layers of security such as endpoint detection and response (EDR) to detect anomalous activities post-login.
  5. Engage with Devolutions support to obtain timelines for patches and apply updates promptly once available.
  6. Consider temporary compensating controls like disabling OAuth login if feasible or enforcing alternative authentication methods until the vulnerability is patched.
  7. Educate users about phishing and credential theft risks to reduce the likelihood of credential compromise.
  8. Conduct regular penetration testing and vulnerability assessments focused on authentication mechanisms to identify similar weaknesses proactively.

Description

Improper authentication in the OAuth login functionality in Devolutions Server 2026.1.11 and earlier allows a remote attacker with valid credentials to bypass multi-factor authentication via a crafted login request.

References

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