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Actively exploited

CVE-2024-5217 ServiceNow Incomplete List of Disallowed Inputs Vulnerability

ServiceNow Washington DC, Vancouver, and earlier Now Platform releases contain an incomplete list of disallowed inputs vulnerability in the GlideExpression script. An unauthenticated user could exploit this vulnerability to execute code remotely.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 29 Jul 2024.
  • Rated Critical severity (CVSS 9.8, scored by Vendor).
  • It has been in the catalogue for 830 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

ServiceNow has addressed an input validation vulnerability that was identified in the Washington DC, Vancouver, and earlier Now Platform releases. This vulnerability could enable an unauthenticated user to remotely execute code within the context of the Now Platform. The vulnerability is addressed in the listed patches and hot fixes below, which were released during the June 2024 patching cycle. If you have not done so already, we recommend applying security patches relevant to your instance as soon as possible.

Affected Versions

ProductVersions
ServiceNow Now Platformbefore Utah Patch 10 Hot Fix 3
before Utah Patch 10a Hot Fix 2
before Utah Patch 10b Hot Fix 1
before Vancouver Patch 6 Hot Fix 2
before Vancouver Patch 7 Hot Fix 3b
before Vancouver Patch 8 Hot Fix 4

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for ServiceNow Utah, Vancouver, and Washington DC Now Platform. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 19 Aug 2024 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

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CVE-2024-4879ServiceNow Improper Input Validation VulnerabilityAdded 29 Jul 2024

All 2 exploited ServiceNow vulnerabilities

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-5217
  3. CVE record: CVE-2024-5217
  4. FIRST EPSS
  5. support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1648313
  6. support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1644293
  7. darkreading.com/cloud-security/patchnow-servicenow-critical-rce-bugs-active-exploit