CVE-2023-0845Network attack vector

Agent crashes via peered gateway upstream references

Published Mar 9, 2023 · Updated Feb 28, 2025

NULL pointer dereference in HashiCorp Consul and Consul Enterprise 1.14.0 through 1.14.4 allows remote authenticated users to crash agents. HashiCorp has not published the exact null-dereference locus; the failing workflow configures an upstream to reference a peering destination on an xDS-connected gateway agent. Exploitation requires an ACL token with service:write permissions and a running ingress or API gateway configured to route to an upstream service.

CVSS severity6.5
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in HashiCorp Consul and Consul Enterprise 1.14.0 through 1.14.4 allows remote authenticated users to crash agents. HashiCorp has not published the exact null-dereference locus; the failing workflow configures an upstream to reference a peering destination on an xDS-connected gateway agent. Exploitation requires an ACL token with service:write permissions and a running ingress or API gateway configured to route to an upstream service.

The record

CVE
CVE-2023-0845
Published
Mar 9, 2023
Updated
Feb 28, 2025
Vendor
HashiCorp
Product
Consul Enterprise
Classifications
CWE-476, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.14.0
  2. Affected versionversion=1.14.1
  3. Affected versionversion=1.14.2
  4. Affected versionversion=1.14.3
  5. Affected versionversion=1.14.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashiCorp · Consul Enterpriseversion=1.14.0; version=1.14.1; version=1.14.2; version=1.14.3; version=1.14.4
HashiCorp · Consulversion=1.14.0; version=1.14.1; version=1.14.2; version=1.14.3; version=1.14.4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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