CVE-2023-25570Public exploitNetwork attack vector

Service-token disclosure via unauthenticated Eureka registration

Published Feb 20, 2023 · Updated Mar 10, 2025

Improper authorization in ApolloConfig Apollo before 2.1.0 allows remote attackers to steal service tokens via unauthenticated Eureka registration. The built-in Eureka registry accepts unauthenticated lease requests and adds attacker-controlled Config or Admin service instances to discovery. Network access to the ConfigService Tomcat endpoint and enabled service-token authentication let the rogue instance receive tokens from clients.

CVSS severity7.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authorization in ApolloConfig Apollo before 2.1.0 allows remote attackers to steal service tokens via unauthenticated Eureka registration. The built-in Eureka registry accepts unauthenticated lease requests and adds attacker-controlled Config or Admin service instances to discovery. Network access to the ConfigService Tomcat endpoint and enabled service-token authentication let the rogue instance receive tokens from clients.

The record

CVE
CVE-2023-25570
Published
Feb 20, 2023
Updated
Mar 10, 2025
Vendor
ApolloConfig
Product
Apollo
Classifications
CWE-306, T1190, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ApolloConfig · Apolloversion=< 2.1.0

Published CVSS scores

7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application
T1557Adversary-in-the-Middle

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo