CVE-2025-5279Network attack vector

Access-token theft via unchecked IdP certificates

Published May 27, 2025 · Updated Oct 14, 2025

Improper certificate validation in Amazon Redshift Python Connector 2.0.872 through 2.1.6 allows man-in-the-middle attackers to steal access tokens. With BrowserAzureOAuth2CredentialsProvider configured, the driver leaves Identity Provider TLS certificates unchecked during token exchange. An attacker must control or intercept the network path to impersonate the Identity Provider; the bounded consequence is exposure of the exchanged access token.

CVSS severity7.0
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Amazon Redshift Python Connector 2.0.872 through 2.1.6 allows man-in-the-middle attackers to steal access tokens. With BrowserAzureOAuth2CredentialsProvider configured, the driver leaves Identity Provider TLS certificates unchecked during token exchange. An attacker must control or intercept the network path to impersonate the Identity Provider; the bounded consequence is exposure of the exchanged access token.

The record

CVE
CVE-2025-5279
Published
May 27, 2025
Updated
Oct 14, 2025
Vendor
Amazon Web Services
Product
Amazon Redshift
Classifications
CWE-295, CAPEC-475, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=2.0.872 <2.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Amazon Web Services · Amazon Redshiftversion=2.0.872 <2.1.7

Published CVSS scores

7.0Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
CAPEC-475Signature Spoofing by Improper Validation
T1557Adversary-in-the-Middle

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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