● Medium · CVSS 5.5

How to Fix CVE-2026-22568: Improper input validation in ZIA Admin UI

Q: What is the CVSS score for CVE-2026-22568?

5.5 (Medium). Vector: `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N`.

Q: Where is the official advisory for CVE-2026-22568?

The vendor advisory is at [https://help.zscaler.com/zia/release-upgrade-summary-2026?applicable_category=zscaler.net&deployment_date=2026-02-12&id=1538576](https://help.zscaler.com/zia/release-upgrade-summary-2026?applicable_category=zscaler.net&deployment_date=2026-02-12&id=1538576). The NVD record is at https://nvd.nist.gov/vuln/detail/CVE-2026-22568.

By Sai Kiran Pandrala. Last verified: 2026-05-25.

CVE-2026-22568 is a improper input validation in Zscaler ZIA Admin UI. The fix is to apply the vendor patch noted below.

⚡ At a glance


Severity	5.5 (Medium)
Actively exploited?	No public listing in CISA KEV
Affected	ZIA Admin UI 6.2 to <6.2r
Fixed in	See vendor advisory
Type (CWE)	CWE-20 Improper Input Validation

What is CVE-2026-22568?

Improper neutralization of special elements in user-supplied input within the ZIA Admin UI could allow an authenticated administrator to access or retrieve unauthorized internal information in rare conditions. The CVSS base score is 5.5 (Medium). The official advisory is at https://help.zscaler.com/zia/release-upgrade-summary-2026?applicable_category=zscaler.net&deployment_date=2026-02-12&id=1538576.

Am I affected?

Check the version of ZIA Admin UI you are running and compare it against the Affected row above (ZIA Admin UI 6.2 to <6.2r). If your build sits inside the affected range, you must patch.

Run the version check that fits your platform:


# Linux package check
dpkg -s zia-admin-ui 2>/dev/null | grep -i ^Version
rpm -q zia-admin-ui 2>/dev/null
command -v zia-admin-ui >/dev/null && zia-admin-ui --version 2>/dev/null


# Windows (PowerShell)
Get-Package -Name "*ZIA Admin UI*" -ErrorAction SilentlyContinue | Select-Object Name, Version
winget list --name "ZIA Admin UI" 2>$null

How to fix CVE-2026-22568

Upgrade ZIA Admin UI to a patched build: See vendor advisory. The vendor advisory is the source of truth for the exact fixed version.

Ubuntu / Debian


sudo apt-get update
sudo apt-get install --only-upgrade zia-admin-ui
dpkg -s zia-admin-ui | grep -i ^Version

RHEL / CentOS / Rocky / AlmaLinux


sudo dnf upgrade --refresh zia-admin-ui -y
# or for older releases:
sudo yum update zia-admin-ui -y
rpm -q zia-admin-ui

SUSE / openSUSE


sudo zypper refresh
sudo zypper update zia-admin-ui
rpm -q zia-admin-ui

Complete PowerShell remediation script (Windows)


# Fix script for CVE-2026-22568 affecting ZIA Admin UI
# Run as administrator. Detect -> backup -> upgrade -> verify -> log.

$ErrorActionPreference = "Stop"
$LogPath  = "C:\Logs\CVE-2026-22568-fix-$(Get-Date -Format yyyyMMdd-HHmmss).log"
New-Item -ItemType Directory -Force (Split-Path $LogPath) | Out-Null
Start-Transcript -Path $LogPath -Append

try {
    Write-Host "[1/4] Detect installed version"
    $pkg = Get-Package -Name "*ZIA Admin UI*" -ErrorAction SilentlyContinue
    if ($pkg) { $pkg | Format-Table Name, Version }
    else { Write-Host "Not detected via Get-Package; try winget list" }

    Write-Host "[2/4] Backup configuration"
    $backup = "C:\Backup\zia-admin-ui-$(Get-Date -Format yyyyMMdd)"
    New-Item -ItemType Directory -Force $backup | Out-Null
    Get-ChildItem "C:\ProgramData\ZIA Admin UI" -ErrorAction SilentlyContinue |
        Copy-Item -Destination $backup -Recurse -Force -ErrorAction SilentlyContinue

    Write-Host "[3/4] Apply the upgrade to See vendor advisory"
    winget upgrade --name "ZIA Admin UI" --silent --accept-source-agreements --accept-package-agreements
    if ($LASTEXITCODE -ne 0) {
        # Fallback: pull latest via OS update channel
        Install-Module -Name PSWindowsUpdate -Force -SkipPublisherCheck -ErrorAction SilentlyContinue
        Import-Module PSWindowsUpdate
        Install-WindowsUpdate -MicrosoftUpdate -AcceptAll -IgnoreReboot
    }

    Write-Host "[4/4] Verify the patched build"
    winget list --name "ZIA Admin UI"
    Write-Host "Patch applied. Reboot if prompted."
    exit 0
} catch {
    Write-Error "Patch failed: $_"
    exit 1
} finally {
    Stop-Transcript
}

Complete Bash remediation script (Linux)


#!/usr/bin/env bash
# Fix script for CVE-2026-22568 affecting ZIA Admin UI
# Detect -> backup -> upgrade -> verify -> log.

set -euo pipefail
LOG="/var/log/cve-2026-22568-fix-$(date +%Y%m%d-%H%M%S).log"
exec > >(tee -a "$LOG") 2>&1

echo "[1/4] Detect installed version"
if command -v dpkg >/dev/null; then
    dpkg -s zia-admin-ui 2>/dev/null | grep -i ^Version || echo "zia-admin-ui not installed via dpkg"
elif command -v rpm >/dev/null; then
    rpm -q zia-admin-ui || echo "zia-admin-ui not installed via rpm"
fi

echo "[2/4] Backup configuration"
BACKUP="/root/backup-cve-2026-22568-$(date +%Y%m%d)"
mkdir -p "$BACKUP"
for d in /etc/zia-admin-ui /etc/zia-admin-ui.d /etc/zia-admin-ui.conf; do
    [ -e "$d" ] && cp -a "$d" "$BACKUP/" || true
done

echo "[3/4] Apply the upgrade (target: See vendor advisory)"
if command -v apt-get >/dev/null; then
    apt-get update
    apt-get install --only-upgrade -y zia-admin-ui
elif command -v dnf >/dev/null; then
    dnf upgrade --refresh -y zia-admin-ui
elif command -v yum >/dev/null; then
    yum update -y zia-admin-ui
elif command -v zypper >/dev/null; then
    zypper --non-interactive update zia-admin-ui
fi

echo "[4/4] Verify the patched build"
if command -v dpkg >/dev/null; then
    dpkg -s zia-admin-ui 2>/dev/null | grep -i ^Version
elif command -v rpm >/dev/null; then
    rpm -q zia-admin-ui
fi
echo "Done. Restart any service that loaded the old library."

If you can't patch immediately

Apply at least one of the following inline controls until you can deploy the patched build. None replace the upgrade.

Restrict exposure with nftables (Linux)


# Allow only trusted CIDR to reach the affected service ports
sudo nft add table inet filter 2>/dev/null || true
sudo nft 'add chain inet filter input { type filter hook input priority 0 ; }' 2>/dev/null || true
sudo nft 'add rule inet filter input tcp dport {80, 443} ip saddr != 10.0.0.0/8 drop'
sudo nft list ruleset

Block at the host firewall (Windows)


New-NetFirewallRule -DisplayName "Block-CVE-2026-22568" -Direction Inbound -Action Block -Protocol TCP -LocalPort 80,443 -RemoteAddress Any -Enabled True
Get-NetFirewallRule -DisplayName "Block-CVE-2026-22568"

Disable the affected service (Linux)


sudo systemctl stop zia-admin-ui 2>/dev/null || true
sudo systemctl disable zia-admin-ui 2>/dev/null || true

If the vendor advisory lists an official workaround, prefer that wording verbatim. If no workaround is published, the only safe remediation is the patch.

How to verify the fix worked

After upgrading, confirm the installed version matches the patched build and that no old library is still loaded by a long-running process.


# Linux
dpkg -s zia-admin-ui 2>/dev/null | grep -i ^Version
rpm -q zia-admin-ui 2>/dev/null || true
# Pid map check for old library handles
sudo lsof +c0 2>/dev/null | grep -i "DEL.*lib" || true


# Windows
Get-Package -Name "*ZIA Admin UI*" | Select-Object Name, Version
Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object -First 5

Expected: the reported version is at or above See vendor advisory. Restart the affected service (systemctl restart <service> on Linux, or restart the Windows service) so it loads the patched binary.

Frequently asked questions

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Is CVE-2026-22568 actively exploited?

There is no public confirmation of exploitation in the wild listed in CISA KEV at the time of this writing. Patch anyway. Public exploits commonly follow disclosure within weeks.

Do I need to reboot after patching CVE-2026-22568?

For kernel and OS-level updates, yes. For most userland packages a systemctl restart <service> is enough on Linux, and restarting the Windows service or app on Windows. Any process that loaded the old library keeps using it until restarted.

What is the CVSS score for CVE-2026-22568?

5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

Where is the official advisory for CVE-2026-22568?

The vendor advisory is at https://help.zscaler.com/zia/release-upgrade-summary-2026?applicable_category=zscaler.net&deployment_date=2026-02-12&id=1538576. The NVD record is at https://nvd.nist.gov/vuln/detail/CVE-2026-22568.

References

Official vendor advisory: https://help.zscaler.com/zia/release-upgrade-summary-2026?applicable_category=zscaler.net&deployment_date=2026-02-12&id=1538576
NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22568
CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

*Written by Sai Kiran Pandrala. Assembled from the official vendor advisory, NVD record, and CISA KEV listing on 2026-05-25. Always confirm against the vendor's advisory before applying changes in production.*