CVE-2026-9783VulnerabilityPublished 24 Jun 2026

ZDI-26-372: Quest NetVault Backup NVBURemovableMedia SQL Injection Remote Code Execution Vulnerability

Source Zero Day Initiative

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Not known to be exploited.

Data as of 7 Nov 2026, 23:24 UTC

Severity

High

Rated High by Threat Radar from the Zero Day Initiative text · No CVSS score from NVD or the CNA

EPSS: 0.9% chance of exploitation in 30 days – higher than 61% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 7 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

remote

What to do

AI-suggested

Quest has issued an official update that corrects this vulnerability. Applying the vendor's update is the recommended remediation. No additional mitigations are specified in the advisory.

Description

A SQL injection vulnerability in Quest NetVault Backup's NVBURemovableMedia JSON-RPC processing allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges. Although exploitation requires authentication, the authentication mechanism can be bypassed. Quest has issued an update to address this vulnerability.

Impact

Successful exploitation allows remote attackers to execute arbitrary code on affected systems with NETWORK SERVICE privileges, potentially leading to full compromise of the affected NetVault Backup installation. The authentication bypass increases the risk by lowering the barrier to exploitation.

Summary

CVE-2026-9783 is a critical remote code execution vulnerability in Quest NetVault Backup. It arises from improper validation of user-supplied strings used in SQL queries within the NVBURemovableMedia JSON-RPC interface. Attackers can bypass authentication and execute arbitrary code in the context of NETWORK SERVICE. The vulnerability has a CVSS score of 8.8 and was publicly disclosed on June 24, 2026. Quest has released an update to fix this issue.

References

zerodayinitiative.com/advisories/ZDI-26-372/ (opens in a new tab)

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