CVE-2025-20025

Service interruption via uncontrolled recursion

Published Aug 12, 2025 · Updated Aug 12, 2025

Uncontrolled recursion in Intel TinyCBOR before 0.6.1 allows local users to interrupt a consuming process through crafted CBOR input. Intel has not identified the affected API or recursive call path; public release notes separately describe recursion-related changes without mapping them to this CVE. Exploitation requires low privileges, local access, high complexity, and active user interaction, and the reported consequence is loss of process availability.

CVSS severity4.1
Medium
EPSS probability0.12%
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

Uncontrolled recursion in Intel TinyCBOR before 0.6.1 allows local users to interrupt a consuming process through crafted CBOR input. Intel has not identified the affected API or recursive call path; public release notes separately describe recursion-related changes without mapping them to this CVE. Exploitation requires low privileges, local access, high complexity, and active user interaction, and the reported consequence is loss of process availability.

The record

CVE
CVE-2025-20025
Published
Aug 12, 2025
Updated
Aug 12, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
TinyCBOR
Classifications
CWE-674, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=before version 0.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · TinyCBORversion=before version 0.6.1

Published CVSS scores

4.1Intel CorporationCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4Intel CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
T1499Endpoint Denial of Service

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

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