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VulnerabilityPublished

CVE-2025-32991: N2WS Backup & Recovery · Race Condition

Source CVE Database V5

0

Not known to be exploited · CVSS 9.0 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

AI-suggested

To mitigate CVE-2025-32991, organizations should take the following specific actions: 1) Immediately plan and execute an upgrade to N2WS Backup & Recovery version 4.4.0 or later once it becomes available, as this version contains the patch for the vulnerability. 2) Until the patch is applied, restrict access to the RESTful API by implementing network segmentation, firewall rules, and IP whitelisting to limit API exposure only to trusted management systems. 3) Employ strong authentication and authorization controls for API access, including multi-factor authentication and role-based access control, to reduce the risk of unauthorized exploitation. 4) Monitor API logs and network traffic for unusual or suspicious activity indicative of reconnaissance or exploitation attempts. 5) Conduct regular security assessments and penetration testing focused on backup infrastructure to identify and remediate potential weaknesses. 6) Maintain offline or immutable backup copies to ensure data recovery in case of backup system compromise. 7) Educate IT and security teams about the vulnerability and ensure incident response plans include scenarios involving backup system compromise. These measures go beyond generic advice by focusing on API access control, monitoring, and backup integrity preservation specific to this vulnerability.

Description

In N2WS Backup & Recovery before 4.4.0, a two-step attack against the RESTful API results in remote code execution.

References

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