CVE-2026-5756

CVE-2026-5756 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Unauthenticated Configuration File Modification Vulnerability in DRC Central Office Services (COS) allows an attacker to modify the server's configuration file, potentially leading to mass data exfiltration, malicious traffic interception, or disruption of testing services.

Frequently asked questions

What is CVE-2026-5756?
Unauthenticated Configuration File Modification Vulnerability in DRC Central Office Services (COS) allows an attacker to modify the server's configuration file, potentially leading to mass data exfiltration, malicious traffic interception, or disruption of testing services.
How severe is CVE-2026-5756?
CVE-2026-5756 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-5756 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5756?
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-2026-5756 have an EU (EUVD) identifier?
Yes. CVE-2026-5756 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22679.
When was CVE-2026-5756 published?
CVE-2026-5756 was published on 2026-04-14 and last updated on 2026-06-17.

References