CVE-2025-34067
CVE-2025-34067 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.
Key facts
- Severity: Critical (CVSS 4.0 base score 10.0)
- EPSS exploit prediction: 19% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19719
- Weakness: CWE-502
- Published:
- Last modified:
Description
An unauthenticated remote command execution vulnerability exists in the applyCT component of the Hikvision Integrated Security Management Platform due to the use of a vulnerable version of the Fastjson library. The endpoint /bic/ssoService/v1/applyCT deserializes untrusted user input, allowing an attacker to trigger Fastjson's auto-type feature to load arbitrary Java classes. By referencing a malicious class via an LDAP URL, an attacker can achieve remote code execution on the underlying system. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.
Frequently asked questions
- What is CVE-2025-34067?
- An unauthenticated remote command execution vulnerability exists in the applyCT component of the Hikvision Integrated Security Management Platform due to the use of a vulnerable version of the Fastjson library. The endpoint /bic/ssoService/v1/applyCT deserializes untrusted user input, allowing an attacker to trigger Fastjson's auto-type feature to load arbitrary Java classes. By referencing a malicious class via an LDAP URL, an attacker can achieve remote code execution on the underlying system. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.
- How severe is CVE-2025-34067?
- CVE-2025-34067 has a CVSS 4.0 base score of 10.0, rated critical severity.
- Is CVE-2025-34067 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34067?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34067 have an EU (EUVD) identifier?
- Yes. CVE-2025-34067 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19719.
- When was CVE-2025-34067 published?
- CVE-2025-34067 was published on 2025-07-02 and last updated on 2026-06-17.
References
- https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/iot/HIKVISION/HIKVISION%20%E7%BB%BC%E5%90%88%E5%AE%89%E9%98%B2%E7%AE%A1%E7%90%86%E5%B9%B3%E5%8F%B0%20applyCT%20Fastjson%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E.md
- https://s4e.io/tools/hikvision-applyct-remote-code-execution
- https://vulncheck.com/advisories/hikvision-ismp-rce-applyct
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