VulnerabilityPublished 13 Jan 2024Updated 3 Jun 2025

CVE-2023-51071: An Access Control Issue

Source CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

What to do

AI-suggested

Given the absence of official patches or vendor advisories, European organizations using QStar Archive Solutions should implement immediate compensating controls. These include restricting network access to the QStar SMB service using firewalls or network segmentation to limit exposure to untrusted networks. Monitoring network traffic for unusual SMB-related commands or link executions can help detect exploitation attempts. Implementing strict access control policies and ensuring that only authorized systems and users can interact with the QStar instance reduces attack surface. Organizations should also maintain up-to-date backups of archived data to mitigate the impact of service disruptions. Engaging with QStar support or vendor channels to obtain patches or official guidance is critical. Additionally, applying intrusion detection/prevention systems (IDS/IPS) signatures tailored to detect attempts to exploit this vulnerability can provide proactive defense. Finally, educating IT staff about this vulnerability and ensuring incident response plans include scenarios involving SMB service disruption will enhance preparedness.

Description

An access control issue in QStar Archive Solutions Release RELEASE_3-0 Build 7 Patch 0 allows unauthenticated attackers to arbitrarily disable the SMB service on a victim's Qstar instance by executing a specific command in a link.

Impact

For European organizations, the impact of this vulnerability could be substantial, especially for those relying on QStar Archive Solutions for critical data archiving and SMB-based file sharing. Disabling the SMB service can cause denial of service, interrupting access to archived data and potentially halting workflows dependent on these services. This disruption can affect sectors such as finance, healthcare, legal, and government agencies where data availability and integrity are paramount. The unauthenticated nature of the exploit increases the risk, as attackers do not need credentials or user interaction, enabling remote exploitation from within or outside the network. This could lead to operational downtime, loss of productivity, and increased incident response costs. Additionally, organizations with compliance obligations under regulations like GDPR may face challenges if data availability is compromised, potentially leading to regulatory scrutiny. While no direct data breach or confidentiality loss is indicated, the integrity and availability impacts could indirectly affect business continuity and trust in archival systems.

References

github.com/Oracle-Security/CVEs/blob/main/QStar%20Archive%20Solutions/CVE-2023-51071.md (opens in a new tab)

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 4 Jul 2025, 16:41 UTC

Technical details

References

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