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                            CERT-Renater

                Note d'Information No. 2026/VULN072
_____________________________________________________________________

DATE                : 23/01/2026

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Cloud Secure Web Gateway versions
                                     prior to 9.8.5.

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https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36778
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Web Security Services Agent Security Update


Product/Component
Cloud Secure Web Gateway - Cloud SWG

Notification Id
36778

Last Updated
23 January 2026

Initial Publication Date
23 January 2026

Status
CLOSED

Severity
HIGH

CVSS Base Score


WorkAround

Affected CVE

Summary

Broadcom's Enterprise Security Group has released an update to address
an issue that was discovered in the Web Security Services (WSS) Agent.

 

Affected Product(s)

 

Web Security Services (WSS) Agent

CVE              Affected Version(s)         Remediation
CVE-2025-13917   Prior to 9.8.5         Upgrade to WSS Agent 9.8.5

 

Issue Details

 
 CVE-2025-13917

 Severity/CVSSv3:      High / 7.0 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

 References:   NVD: CVE-2025-13917

 Impact:   Elevation of Privilege

 Description:
WSS Agent, prior to 9.8.5, may be susceptible to a Elevation of
Privilege vulnerability, which is a type of issue whereby an attacker
may attempt to compromise the software application to gain elevated
access to resources that are normally protected from an application or
user.


Mitigation & Additional Information

WSS Agent 9.8.5 has been released which addresses this issue and is
available in the Cloud SWG portal. Navigate to Connectivity > Agent
Settings and the download is available in the Maintenance Releases
portion of the Agent Installers section.

Broadcom's Enterprise Security Group recommends the following measures
to reduce risk of attack:

    Restrict access to administrative or management systems to
authorized privileged users.
    Restrict remote access to trusted/authorized systems only.
    Run under the principle of least privilege, where possible, to
limit the impact of potential exploit.
    Keep all operating systems and applications current with vendor
patches.
    Follow a multi-layered approach to security. At a minimum, run
both firewall and anti-malware applications to provide multiple
points of detection and protection for both inbound and outbound
threats.
    Deploy network and host-based intrusion detection systems to
monitor network traffic for signs of anomalous or suspicious
activity. This may aid in the detection of attacks or malicious
activity related to the exploitation of latent vulnerabilities.


Acknowledgements

    CVE-2025-13917: dfc3d21780 Cparta Cyber Defense AB


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