CVE-2025-35983VulnerabilityPublished 10 Jul 2025

CVE-2025-35983: Gallagher Controller 7000 · Improper Certificate Validation

Affects Gallagher Controller 7000Source CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 8% 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:U/C:N/I:H/A:L

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
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: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 10 Jul 2025
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 2026-10-26.

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 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

Affected software

Product	Affected	Fixed in
Gallagher Controller 7000	Affected =9.30	Fixed in–

AI-suggested

To mitigate CVE-2025-35983, European organizations should: 1) Immediately update affected Gallagher Controller 7000 devices to firmware version vCR9.30.250624a or later, as this version addresses the improper certificate validation issue. 2) Implement strict network segmentation and access controls to restrict access to devices during their initial configuration phase, limiting exposure to untrusted networks or users. 3) Employ out-of-band or physically secured configuration methods where possible to prevent remote exploitation during setup. 4) Monitor network traffic and device logs closely during device provisioning for any anomalous activity indicative of attempted exploitation. 5) Establish robust device deployment procedures that include verifying firmware versions and certificate validation status before connecting devices to production networks. 6) Engage with Gallagher support for any additional security advisories or patches related to this vulnerability. 7) Consider temporary compensating controls such as disabling remote configuration interfaces until devices are fully configured and secured. These steps go beyond generic advice by focusing on securing the initial configuration window, which is the critical exposure period for this vulnerability.

Description

Improper Certificate Validation (CWE-295) in the Controller 7000 OneLink implementation could allow an unprivileged attacker to perform a limited denial of service or perform privileged overrides during the initial configuration of the Controller, there is no risk for Controllers once they are connected. This issue affects Controller 7000: 9.30 prior to vCR9.30.250624a (distributed in 9.30.1871 (MR1)).

Impact

For European organizations, the impact of CVE-2025-35983 can be significant, particularly for those relying on Gallagher Controller 7000 systems for physical security and access control. The ability for an attacker to perform privileged overrides during initial configuration could allow unauthorized access or manipulation of security policies, potentially compromising facility security. The limited denial of service could disrupt security operations temporarily, affecting business continuity. Although the risk is confined to the initial configuration phase, organizations with frequent device provisioning or remote deployments may be more vulnerable. This could be especially impactful in critical infrastructure sectors such as transportation, energy, and government facilities across Europe that use Gallagher products. The lack of confidentiality impact reduces the risk of data leakage, but the integrity and availability concerns remain critical for operational security. The medium severity rating suggests that while the vulnerability is not trivial, it requires specific conditions and higher attack complexity, somewhat limiting widespread exploitation. However, the remote network attack vector without authentication means that attackers could attempt exploitation during device setup remotely, which is a concern for distributed or remotely managed deployments.

CWE-295Improper Certificate Validation (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not validate, or incorrectly validates, a certificate.
Architecture and Design · Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
OWASP Cheat Sheets
Transport Layer Protection (opens in a new tab)
TLS Cipher String (opens in a new tab)
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V9.2.1 (opens in a new tab)
V1.9.2 (opens in a new tab)
V2.8.5 (opens in a new tab)
Attack patterns
Creating a Rogue Certification Authority Certificate (opens in a new tab)
Signature Spoofing by Improper Validation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

security.gallagher.com/en-NZ/Security-Advisories/CVE-2025-35983 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2025, 03:33 UTC

WeaknessesCWE-295

Technical details

References

Community reviews

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