October 27, 2026

CVE Watchtower

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CVE-2025-12044NVD

Vulnerability Summary

Vault and Vault Enterprise (“Vault”) are vulnerable to an unauthenticated denial of service when processing JSON payloads. This occurs due to a regression from a previous fix for [+HCSEC-2025-24+|https://discuss.hashicorp.com/t/hcsec-2025-24-vault-denial-of-service-though-complex-json-payloads/76393]  which allowed for processing JSON payloads before applying rate limits. This vulnerability, CVE-2025-12044, is fixed in Vault Community Edition 1.21.0 and Vault Enterprise 1.16.27, 1.19.11, 1.20.5, and 1.21.0.
Severity Level
HIGH(7.5)
Published Date
Oct 23, 2025
Last Modified
Oct 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.53%Probability
Root Weakness (CWE)
CWE-770: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 7.5 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Hashicorp Vault >= 1.16.25 and < 1.16.27
  • Hashicorp Vault >= 1.18.14 and <= 1.18.15
  • Hashicorp Vault >= 1.19.9 and <= 1.19.11
  • Hashicorp Vault >= 1.20.3 and < 1.20.5
  • Hashicorp Vault >= 1.20.3 and < 1.21.0
Patched Versions
  • Hashicorp Vault 1.16.27
  • Hashicorp Vault 1.20.5
  • Hashicorp Vault 1.21.0
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🚫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