CVE-2024-8923: ServiceNow has addressed an input validation vulnerability that was identified in the Now Platform

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2024-8923 is a critical-severity flaw (CVSS 9.8) affecting servicenow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ServiceNow has addressed an input validation vulnerability that was identified in the Now Platform. This vulnerability could enable an unauthenticated user to remotely execute code within the context of the Now Platform. ServiceNow deployed an update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. Further, the vulnerability is addressed in the listed patches and hot fixes.

Why this priority

Critical severity
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	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-94
Published	2024-10-29
Last modified	2026-06-17

Publisher (CNA): ServiceNow · Vendor: servicenow

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

Am I affected?

Timeline

2024-10-29 16:15 UTCPublished CVE record published
2026-06-17 08:23 UTCUpdated Record last modified

servicenow servicenow DOWNGRADE

Affected: xanadu early_availability · xanadu early_availability_hotfix_1 · washington_dc · washington_dc early_availability · washington_dc early_availability_hotfix_1 · washington_dc patch_1 · washington_dc patch_1_hotfix_1 · washington_dc patch_1_hotfix_2

Fixed in: no fixed release known

Safe to downgrade to: a release before vancouver

1. Check installed version

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

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

apt-cache madison servicenow sudo apt install servicenow=<VERSION_BEFORE_vancouver> sudo apt-mark hold servicenow

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

dnf --showduplicates list servicenow sudo dnf downgrade servicenow-<VERSION_BEFORE_vancouver> sudo dnf versionlock add servicenow

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-2024-8923?

servicenow: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-8923 being exploited?

CVE-2024-8923 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-2024-8923 affect?

CVE-2024-8923 affects servicenow. Severity is critical (CVSS 9.8). ServiceNow has addressed an input validation vulnerability that was identified in the Now Platform. This vulnerability could enable an unauthenticated user to remotely execute code within the context of the Now Platform. ServiceNow deployed

How urgent is CVE-2024-8923?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-8924 HIGH 7.5 DOWNGRADE ServiceNow has addressed a blind SQL injection vulnerability that was identified in the Now Platform
CVE-2024-5217 CRITICAL 9.8 EXPLOITED DOWNGRADE ServiceNow Incomplete List of Disallowed Inputs Vulnerability
CVE-2024-4879 CRITICAL 9.8 EXPLOITED DOWNGRADE ServiceNow Improper Input Validation Vulnerability

References

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