CVE-2026-85393

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 25.4% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-24.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-03 18:54Z1 MO AGO

Last updated

2026-09-03 19:14Z1 MO AGO

Reserved

2026-09-03

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-347Improper Verification of Cryptographic SignatureBase
• CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

bdb0c75f2916955b9e6fa2640dd5bb548e9aa9a7451ac6149ce289aed3318116

• github.comGitHub Issue #1149https://github.com/digitalbazaar/forge/issues/1149issue-tracking
• github.comhttps://github.com/digitalbazaar/forgeproduct
• github.comhttps://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.jstechnical-description
• github.comhttps://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.jstechnical-description
• github.comGitHub Security Advisory (GHSA-ppp5-5v6c-4jwp)https://github.com/advisories/GHSA-ppp5-5v6c-4jwprelated
• www.vulncheck.comVulnCheck Advisory: node-forge through 1.4.0 RSA PKCS#1 v1.5 Signature Forgery via Nested DigestAlgorithm Paddinghttps://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-paddingthird-party-advisory