CVE Tools
Sign in

CVE-2025-66031

node-forge ASN.1 Unbounded Recursion

Published: Nov 26, 2025Updated: Dec 6, 2025 Sources: CVE List NVD GHSA csafCWE-674
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 64.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Uncontrolled Recursion vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs. This issue has been patched in version 1.3.2.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-674

Affected Products

digitalbazaar
commercialaka digitalbazaar/forge
forgeLibrary
Security Products / pki-crypto
npm
package-ecosystem
node-forge
OSS Libraries

Exploitability

Official Patch Available
Is your org exposed to CVE-2025-66031?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/digitalbazaar/forge/commit/260425c6167a38aae038697132483b5517b26451
github.com
https://github.com/digitalbazaar/forge/security/advisories/GHSA-554w-wpv2-vw27
github.com
https://cert-portal.siemens.com/productcert/csaf/ssa-485750.json
cert-portal.siemens.com
and 67 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-66031 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows