CVE-2025-27607 Vulnerability Analysis & Exploit Details

CVE-2025-27607
Vulnerability Scoring

8.8
/10
Severe Risk

Cybersecurity professionals consider CVE-2025-27607 an immediate threat requiring urgent mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: Required
    User interaction is necessary for successful exploitation.

CVE-2025-27607 Details

Status: Analyzed

Last updated: 🕓 01 Jul 2025, 16:22 UTC
Originally published on: 🕔 07 Mar 2025, 17:15 UTC

Time between publication and last update: 115 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2025-27607 Vulnerability Summary

CVE-2025-27607: Python JSON Logger is a JSON Formatter for Python Logging. Between 30 December 2024 and 4 March 2025 Python JSON Logger was vulnerable to RCE through a missing dependency. This occurred because msgspec-python313-pre was deleted by the owner leaving the name open to being claimed by a third party. If the package was claimed, it would allow them RCE on any Python JSON Logger user who installed the development dependencies on Python 3.13 (e.g. pip install python-json-logger[dev]). This issue has been resolved with 3.3.0.

Assessing the Risk of CVE-2025-27607

Access Complexity Graph

The exploitability of CVE-2025-27607 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2025-27607

With low attack complexity and no required privileges, CVE-2025-27607 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2025-27607, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2025-27607, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2025-27607 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2025-27607 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2025-27607 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.045% (probability of exploit)

EPSS Percentile: 18.4% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 81.6% of others.

CVE-2025-27607 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:a:nhairs:python_json_logger:0.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.5:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.6:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.6:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.7:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.8:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.8:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.9:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.9:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.10:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.10:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:0.1.11:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:0.1.11:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.6:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:2.0.7:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:2.0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.1.0:-:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.1.0:-:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.1.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nhairs:python_json_logger:3.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:nhairs:python_json_logger:3.2.1:*:*:*:*:*:*:*

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