Is CVE-2026-5853 actively exploited?

No active exploitation of CVE-2026-5853 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5853 be exploited remotely?

Yes. CVE-2026-5853 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5853?

CVE-2026-5853 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-5853

CWE-77Published: April 9, 2026· Updated: Apr 13, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.6th

Official Description

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setIpv6LanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument addrPrefixLen leads to os command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

NVD Source

Technical Analysis

CVE-2026-5853 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.