How serious is CVE-2025-11683?

This vulnerability has a CVSS score of 6.5 out of 10, classified as MEDIUM severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2025-11683?

Yes, proof-of-concept exploit code for CVE-2025-11683 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2025-11683?

CVE-2025-11683 affects toddr yaml\. Check the full CVE details for specific version information.

How do I fix CVE-2025-11683?

To remediate CVE-2025-11683, check for security patches from toddr. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2025-11683

Medium

|6.5

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to potentially read sensitive information from memory by exploiting a flaw in how certain YAML files are processed, specifically those with complex structures and empty values. It requires the attacker to provide a specially crafted YAML file to trigger the issue, but there’s no evidence that it can lead to more severe memory corruption or control over the system.

Technical Description

YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.

CVSS Vector Analysis

Attack VectorAdjacent Network

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactNone

Availability ImpactNone

ScopeUnchanged

Vector String

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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$931($500-$1K)

Vendor Response

Grade FPatched in 144 days

Quick Information

Published

Oct 16, 2025

6 months ago

Last Modified

Mar 9, 2026

29 days ago

Vendor

toddr

Product

yaml\