What is the CVSS score of CVE-2025-0696?

CVE-2025-0696 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.1%.

Which versions of Cesanta Frozen are affected by CVE-2025-0696?

Organizations using Cesanta Frozen should be aware of moderate risk from CVE-2025-0696, a null pointer dereference vulnerability rated CVSS 5.3.

How to fix or mitigate CVE-2025-0696?

Within 30 days: Identify affected systems running Cesanta Frozen and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Cesanta Frozen CVE-2025-0696

MEDIUM

NULL Pointer Dereference (CWE-476)

2025-01-27 prodsec@nozominetworks.com

Null Pointer Dereference Denial Of Service

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:05 vuln.today

CVE Published

Jan 27, 2025 - 11:15 nvd

MEDIUM 5.3

DescriptionCVE.org

AnalysisAI

A NULL Pointer Dereference vulnerability in Cesanta Frozen versions less than 1.7 allows an attacker to induce a crash of the component embedding the library by supplying a maliciously crafted JSON. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. A NULL Pointer Dereference vulnerability in Cesanta Frozen versions less than 1.7 allows an attacker to induce a crash of the component embedding the library by supplying a maliciously crafted JSON as input.

Affected ProductsAI

Cesanta Frozen versions less than 1.7.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.