What is the CVSS score of CVE-2025-27788?

CVE-2025-27788 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.4%.

Which versions of Javascript Object Notation are affected by CVE-2025-27788?

Organizations using version 2.10.0 and face notable risk from CVE-2025-27788, a out-of-bounds read vulnerability rated CVSS 7.5. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-27788?

Within 7 days: Identify all affected systems running version 2.10.0 and and apply vendor patches promptly. Vendor patch is available.

Javascript Object Notation CVE-2025-27788

HIGH

Out-of-bounds Read (CWE-125)

2025-03-12 security-advisories@github.com

Buffer Overflow Information Disclosure Red Hat Suse Javascript Object Notation Ruby Lang

7.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.5 HIGH

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

SUSE

HIGH

qualitative

Red Hat

7.5 HIGH

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:31 vuln.today

Patch released

Mar 28, 2026 - 18:31 nvd

Patch available

CVE Published

Mar 12, 2025 - 14:15 nvd

HIGH 7.5

DescriptionGitHub Advisory

JSON is a JSON implementation for Ruby. Starting in version 2.10.0 and prior to version 2.10.2, a specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions prior to 2.10.0 are not vulnerable. Version 2.10.2 fixes the problem. No known workarounds are available.

AnalysisAI

JSON is a JSON implementation for Ruby. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. JSON is a JSON implementation for Ruby. Starting in version 2.10.0 and prior to version 2.10.2, a specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions prior to 2.10.0 are not vulnerable. Version 2.10.2 fixes the problem. No known workarounds are available. Affected products include: Ruby-Lang Javascript Object Notation. Version information: version 2.10.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.