CVE-2023-24487: Arbitrary file read in Citrix ADC and Citrix Gateway 

Routine

MEDIUM 6.3UPGRADEUPGRADE

CVE-2023-24487 is a medium-severity flaw (CVSS 6.3) affecting application delivery controller, gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Arbitrary file read in Citrix ADC and Citrix Gateway 

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-253
Published	2023-07-10
Last modified	2026-06-17

Publisher (CNA): Citrix Systems, Inc. · Vendor: citrix

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

Am I affected?

Timeline

2023-07-10 21:15 UTCPublished CVE record published
2026-06-17 05:39 UTCUpdated Record last modified

citrix application delivery controller UPGRADE

Affected: >= 12.1 and < 12.1-55.296 · >= 12.1 and < 12.1-65.35 · >= 13.0 and < 13.0-90.11 · >= 13.1 and < 13.1-37.150 · >= 13.1 and < 13.1-45.61

Fixed in: 12.1-55.296, 12.1-65.35, 13.0-90.11, 13.1-37.150, 13.1-45.61

Safe to downgrade to: a release before 12.1

1. Check installed version

apt-cache policy application-delivery-controller || rpm -q application-delivery-controller || application-delivery-controller --version

2. UPGRADE to 12.1-55.296 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade application-delivery-controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade application-delivery-controller

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 12.1 (Debian / Ubuntu)

apt-cache madison application-delivery-controller sudo apt install application-delivery-controller=<VERSION_BEFORE_12.1> sudo apt-mark hold application-delivery-controller

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list application-delivery-controller sudo dnf downgrade application-delivery-controller-<VERSION_BEFORE_12.1> sudo dnf versionlock add application-delivery-controller

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.

citrix gateway UPGRADE

Affected: >= 12.1 and < 12.1-65.35 · >= 13.0 and < 13.0-90.11 · >= 13.1 and < 13.1-45.61

Fixed in: 12.1-65.35, 13.0-90.11, 13.1-45.61

Safe to downgrade to: a release before 12.1

1. Check installed version

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

2. UPGRADE to 12.1-65.35 (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.

3. If no update is available yet, DOWNGRADE to a release before 12.1 (Debian / Ubuntu)

apt-cache madison gateway sudo apt install gateway=<VERSION_BEFORE_12.1> sudo apt-mark hold gateway

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gateway sudo dnf downgrade gateway-<VERSION_BEFORE_12.1> sudo dnf versionlock add 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-2023-24487?

application delivery controller: upgrade to 12.1-55.296, 12.1-65.35, 13.0-90.11, 13.1-37.150, 13.1-45.61; gateway: upgrade to 12.1-65.35, 13.0-90.11, 13.1-45.61. Exact commands for each OS are on this page.

Is CVE-2023-24487 being exploited?

CVE-2023-24487 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-2023-24487 affect?

CVE-2023-24487 affects application delivery controller, gateway. Severity is medium (CVSS 6.3). Arbitrary file read in Citrix ADC and Citrix Gateway 

How urgent is CVE-2023-24487?

Priority 38/100. No elevated risk signals yet.

Software pages

Citrix vulnerabilities

Related CVEs

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CVE-2022-27507 MEDIUM 6.5 UPGRADE UPGRADE Authenticated denial of service

References

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