October 13, 2026

CVE Watchtower

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CVE-2023-23397NVD

Vulnerability Summary

No description available
Severity Level
CRITICAL(9.8)
Published Date
Mar 14, 2023
Last Modified
Oct 21, 2025
Exploitation Status
ACTIVE
EPSS Score (30-Day)
Data Pending
Root Weakness (CWE)
CWE-20: Improper Input Validation ↗
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Microsoft Microsoft Office LTSC 2021 >= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Outlook 2016 >= 16.0.0.0 and < 16.0.5387.1000
  • Microsoft Microsoft 365 Apps for Enterprise >= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Office 2019 >= 19.0.0 and < https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Outlook 2013 Service Pack 1 >= 15.0.0.0 and < 15.0.5537.1000
Patched Versions
  • Microsoft Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Outlook 2016 16.0.5387.1000
  • Microsoft Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Office 2019 https://aka.ms/OfficeSecurityReleases
  • Microsoft Microsoft Outlook 2013 Service Pack 1 15.0.5537.1000
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💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References