CVE-2015-5718: Stack-based buffer overflow in the handle_debug_network function in the manager in Websense Content Gateway be

Routine

MEDIUM 4.0DOWNGRADE

CVE-2015-5718 is a medium-severity flaw (CVSS 4.0) affecting content gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the handle_debug_network function in the manager in Websense Content Gateway before 8.0.0 HF02 allows remote administrators to cause a denial of service (crash) via a crafted diagnostic command line request to submit_net_debug.cgi.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.0 (Medium)
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-119
Published	2015-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: websense

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-08-12 14:59 UTCPublished CVE record published
2026-06-17 00:29 UTCUpdated Record last modified

websense content gateway DOWNGRADE

Affected: 8.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0.0

1. Check installed version

apt-cache policy content-gateway || rpm -q content-gateway || content-gateway --version

2. No fixed release: DOWNGRADE to a release before 8.0.0 (Debian / Ubuntu)

apt-cache madison content-gateway sudo apt install content-gateway=<VERSION_BEFORE_8.0.0> sudo apt-mark hold content-gateway

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list content-gateway sudo dnf downgrade content-gateway-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add content-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-5718?

content gateway: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-5718 being exploited?

CVE-2015-5718 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-5718 affect?

CVE-2015-5718 affects content gateway. Severity is medium (CVSS 4.0). Stack-based buffer overflow in the handle_debug_network function in the manager in Websense Content Gateway before 8.0.0 HF02 allows remote administrators to cause a denial of service (crash) via a crafted diagnostic command line request to

How urgent is CVE-2015-5718?

Priority 39/100. Public exploit reference

References

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