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CVE-2019-6665: On BIG-IP ASM 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, BIG-IQ 6.0.0 and 5.2.0-5.4.0,

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CRITICAL 9.4REMOTEUPGRADEUPGRADEDOWNGRADE

CVE-2019-6665 is a critical-severity flaw (CVSS 9.4) affecting big-ip application security manager, big-iq centralized management, enterprise manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

On BIG-IP ASM 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, BIG-IQ 6.0.0 and 5.2.0-5.4.0, iWorkflow 2.3.0, and Enterprise Manager 3.1.1, an attacker with access to the device communication between the BIG-IP ASM Central Policy Builder and the BIG-IQ/Enterprise Manager/F5 iWorkflow will be able to set up the proxy the same way and intercept the traffic.

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.4 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.1% (top 34%)
CISA exploited listNo
Published2019-11-27
Last modified2026-06-17
Publisher (CNA): F5 Networks · Vendor: f5

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

Am I affected?

Timeline

f5 big-ip application security manager UPGRADE
Affected: >= 13.1.0 and <= 13.1.3.1 · >= 14.0.0 and <= 14.0.1 · >= 14.1.0 and <= 14.1.2 · >= 15.0.0 and <= 15.0.1
Fixed in: newer than 15.0.1
Safe to downgrade to: a release before 13.1.0
1. Check installed version
apt-cache policy big-ip-application-security-manager || rpm -q big-ip-application-security-manager || big-ip-application-security-manager --version
2. UPGRADE to newer than 15.0.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade big-ip-application-security-manager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade big-ip-application-security-manager
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 13.1.0 (Debian / Ubuntu)
apt-cache madison big-ip-application-security-manager sudo apt install big-ip-application-security-manager=<VERSION_BEFORE_13.1.0> sudo apt-mark hold big-ip-application-security-manager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list big-ip-application-security-manager sudo dnf downgrade big-ip-application-security-manager-<VERSION_BEFORE_13.1.0> sudo dnf versionlock add big-ip-application-security-manager
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.
f5 big-iq centralized management UPGRADE
Affected: >= 5.2.0 and <= 5.4.0 · 6.0.0
Fixed in: newer than 5.4.0
Safe to downgrade to: a release before 5.2.0
1. Check installed version
apt-cache policy big-iq-centralized-management || rpm -q big-iq-centralized-management || big-iq-centralized-management --version
2. UPGRADE to newer than 5.4.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade big-iq-centralized-management
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade big-iq-centralized-management
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 5.2.0 (Debian / Ubuntu)
apt-cache madison big-iq-centralized-management sudo apt install big-iq-centralized-management=<VERSION_BEFORE_5.2.0> sudo apt-mark hold big-iq-centralized-management
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list big-iq-centralized-management sudo dnf downgrade big-iq-centralized-management-<VERSION_BEFORE_5.2.0> sudo dnf versionlock add big-iq-centralized-management
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.
f5 enterprise manager DOWNGRADE
Affected: 3.1.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.1.1
1. Check installed version
apt-cache policy enterprise-manager || rpm -q enterprise-manager || enterprise-manager --version
2. No fixed release: DOWNGRADE to a release before 3.1.1 (Debian / Ubuntu)
apt-cache madison enterprise-manager sudo apt install enterprise-manager=<VERSION_BEFORE_3.1.1> sudo apt-mark hold enterprise-manager
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list enterprise-manager sudo dnf downgrade enterprise-manager-<VERSION_BEFORE_3.1.1> sudo dnf versionlock add enterprise-manager
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.
f5 iworkflow DOWNGRADE
Affected: 2.3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.3.0
1. Check installed version
apt-cache policy iworkflow || rpm -q iworkflow || iworkflow --version
2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)
apt-cache madison iworkflow sudo apt install iworkflow=<VERSION_BEFORE_2.3.0> sudo apt-mark hold iworkflow
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list iworkflow sudo dnf downgrade iworkflow-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add iworkflow
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-2019-6665?

big-ip application security manager: upgrade to newer than 15.0.1; big-iq centralized management: upgrade to newer than 5.4.0; enterprise manager: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-6665 being exploited?

CVE-2019-6665 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-2019-6665 affect?

CVE-2019-6665 affects big-ip application security manager, big-iq centralized management, enterprise manager. Severity is critical (CVSS 9.4). On BIG-IP ASM 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, BIG-IQ 6.0.0 and 5.2.0-5.4.0, iWorkflow 2.3.0, and Enterprise Manager 3.1.1, an attacker with access to the device communication between the BIG-IP ASM Central

How urgent is CVE-2019-6665?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

F5 BIG-IP vulnerabilities

Related CVEs

References

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