How severe is CVE-2025-9871?

CVE-2025-9871 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9871?

CVE-2025-9871 affects Razer Synapse. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9871?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-9871 have an EU (EUVD) identifier?

Yes. CVE-2025-9871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36710.

When was CVE-2025-9871 published?

CVE-2025-9871 was published on 2025-10-29 and last updated on 2026-06-17.

CVE-2025-9871

CVE-2025-9871 is a high-severity vulnerability in Razer Synapse with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-36710
Weakness: CWE-59
Affected product: Razer Synapse
Published: 2025-10-29
Last modified: 2026-06-17

Description

Razer Synapse 3 Chroma Connect Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Razer Synapse 3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Razer Chroma SDK installer. By creating a symbolic link, an attacker can abuse the installer to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26373.

Frequently asked questions

What is CVE-2025-9871?: Razer Synapse 3 Chroma Connect Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Razer Synapse 3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Razer Chroma SDK installer. By creating a symbolic link, an attacker can abuse the installer to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26373.
How severe is CVE-2025-9871?: CVE-2025-9871 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9871?: CVE-2025-9871 affects Razer Synapse. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-9871 have an EU (EUVD) identifier?: Yes. CVE-2025-9871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36710.
When was CVE-2025-9871 published?: CVE-2025-9871 was published on 2025-10-29 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-920/

Affected products (1)

cpe:2.3:a:razer:synapse:*:*:*:*:*:*:*:*

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