CVE-2017-14706: DenyAll WAF before 6.4.1 allows unauthenticated remote attackers to obtain authentication information by makin

This week

CRITICAL 9.8REMOTEDOWNGRADEDOWNGRADE

CVE-2017-14706 is a critical-severity flaw (CVSS 9.8) affecting i-suite, web application firewall. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DenyAll WAF before 6.4.1 allows unauthenticated remote attackers to obtain authentication information by making a typeOf=debug request to /webservices/download/index.php, and then reading the iToken field in the reply. This affects DenyAll i-Suite LTS 5.5.0 through 5.5.12, i-Suite 5.6, Web Application Firewall 5.7, and Web Application Firewall 6.x before 6.4.1, with On Premises or AWS/Azure cloud deployments.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	28.2% (top 2%)
CISA exploited list	No
Weakness	CWE-287
Published	2017-09-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: denyall

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

Am I affected?

Timeline

2017-09-22 18:29 UTCPublished CVE record published
2026-06-17 01:06 UTCUpdated Record last modified

denyall i-suite DOWNGRADE

Affected: 5.5.0 · 5.5.9 · 5.5.10 · 5.5.11 · 5.5.12 · 5.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.5.0

1. Check installed version

apt-cache policy i-suite || rpm -q i-suite || i-suite --version

2. No fixed release: DOWNGRADE to a release before 5.5.0 (Debian / Ubuntu)

apt-cache madison i-suite sudo apt install i-suite=<VERSION_BEFORE_5.5.0> sudo apt-mark hold i-suite

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

dnf --showduplicates list i-suite sudo dnf downgrade i-suite-<VERSION_BEFORE_5.5.0> sudo dnf versionlock add i-suite

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.

denyall web application firewall DOWNGRADE

Affected: 5.7.0 · 6.0.0 · 6.1.0 · 6.2.0 · 6.3.0 · 6.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.7.0

1. Check installed version

apt-cache policy web-application-firewall || rpm -q web-application-firewall || web-application-firewall --version

2. No fixed release: DOWNGRADE to a release before 5.7.0 (Debian / Ubuntu)

apt-cache madison web-application-firewall sudo apt install web-application-firewall=<VERSION_BEFORE_5.7.0> sudo apt-mark hold web-application-firewall

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

dnf --showduplicates list web-application-firewall sudo dnf downgrade web-application-firewall-<VERSION_BEFORE_5.7.0> sudo dnf versionlock add web-application-firewall

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Metasploit: DenyAll Web Application Firewall Remote Code Execution

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-2017-14706?

i-suite: downgrade or apply the listed mitigation; web application firewall: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-14706 being exploited?

CVE-2017-14706 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-2017-14706 affect?

CVE-2017-14706 affects i-suite, web application firewall. Severity is critical (CVSS 9.8). DenyAll WAF before 6.4.1 allows unauthenticated remote attackers to obtain authentication information by making a typeOf=debug request to /webservices/download/index.php, and then reading the iToken field in the reply. This affects DenyAll

How urgent is CVE-2017-14706?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities · Azure vulnerabilities · AWS vulnerabilities

Related CVEs

CVE-2017-14705 HIGH 8.1 DOWNGRADE DOWNGRADE DenyAll WAF before 6.4.1 allows unauthenticated remote command execution via TCP port 3001 because shell metac

References

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