CVE-2019-18177: In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is

Q: How do I fix CVE-2019-18177?

application delivery controller firmware: upgrade to 13.0-58.30; gateway: upgrade to 13.0-58.30. Exact commands for each OS are on this page.

Q: Is CVE-2019-18177 being exploited?

CVE-2019-18177 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-18177 affect?

CVE-2019-18177 affects application delivery controller firmware, gateway. Severity is medium (CVSS 6.5). In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is a configured SSL VPN endpoint. This affects Citrix ADC and Citrix Gateway 13.0-58.30 and later releases before the CTX276688 updat

Q: How urgent is CVE-2019-18177?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADEUPGRADE

CVE-2019-18177 is a medium-severity flaw (CVSS 6.5) affecting application delivery controller firmware, gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is a configured SSL VPN endpoint. This affects Citrix ADC and Citrix Gateway 13.0-58.30 and later releases before the CTX276688 update.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-200
Published	2022-12-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: citrix

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

Am I affected?

Timeline

2022-12-26 21:15 UTCPublished CVE record published
2026-06-17 02:24 UTCUpdated Record last modified

citrix application delivery controller firmware UPGRADE

Affected: < 13.0-58.30

Fixed in: 13.0-58.30

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

citrix gateway UPGRADE

Affected: < 13.0-58.30

Fixed in: 13.0-58.30

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 13.0-58.30 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2019-18177?

application delivery controller firmware: upgrade to 13.0-58.30; gateway: upgrade to 13.0-58.30. Exact commands for each OS are on this page.

Is CVE-2019-18177 being exploited?

CVE-2019-18177 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-2019-18177 affect?

CVE-2019-18177 affects application delivery controller firmware, gateway. Severity is medium (CVSS 6.5). In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is a configured SSL VPN endpoint. This affects Citrix ADC and Citrix Gateway 13.0-58.30 and later releases before the CTX276688 updat

How urgent is CVE-2019-18177?

Priority 35/100. No elevated risk signals yet.

Software pages

Citrix vulnerabilities

Related CVEs

CVE-2019-19781 CRITICAL 9.8 EXPLOITED MITIGATE MITIGATE Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
CVE-2022-27518 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
CVE-2022-27516 MEDIUM 5.3 UPGRADE UPGRADE User login brute force protection functionality bypass
CVE-2022-27513 HIGH 8.3 UPGRADE UPGRADE Remote desktop takeover via phishing
CVE-2022-27510 CRITICAL 9.8 UPGRADE UPGRADE Unauthorized access to Gateway user capabilities

References

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