CVE-2025-6547 | On Node.js < 3, pbkdf2 silently disregards Uint8Array input, returning static keys

Improper Input Validation vulnerability in pbkdf2 allows Signature Spoofing by Improper Validation.This issue affects pbkdf2: <=3.1.2.

Published: 2025-06-23 Last update: 2026-04-15 Assigner: 7ffcee3d-2c14-4c3e-b844-86c6a321a158 Source: 7ffcee3d-2c14-4c3e-b844-86c6a321a158
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-6547 is rated Moderate Risk (45.4/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.09%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-6547

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-19 0.02% 0.09% +0.07%
2 2026-02-18 0.09% 0.02% -0.07%
3 2025-11-21 — 0.09% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-6547

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 4.0 CRITICAL
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/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 Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:H)
Exploitation depends on constrained or hard-to-reproduce conditions.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H)
High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:H)
High confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:H)
High integrity impact on subsequent systems.
Subsequent system availability impact (SA:H)
High availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — 7ffcee3d-2c14-4c3e-b844-86c6a321a158

Weakness enumeration for CVE-2025-6547

GitHub Security Advisory for CVE-2025-6547

GHSA-v62p-rq8g-8h59 · Severity: critical · Ecosystem: npm — pbkdf2 silently disregards Uint8Array input, returning static keys

OS Trackers for CVE-2025-6547

vendor priority summary link
debian unimportant CVE-2025-6547 unimportant priority: Debian including 1 source packages (node-pbkdf2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-6547
redhat high — https://access.redhat.com/security/cve/CVE-2025-6547
suse high CVE-2025-6547 severity important: SUSE including 57 source package names (aws-cli-1.33.26-150400.34.7.1, cockpit, …), 534 product×package rows across 96 product lines (Image SLES15-SP4-BYOS, Image SLES15-SP4-BYOS-EC2, … (96 product lines)): Known Not Affected 240, Fixed 229, Will Not Fix 65. https://www.suse.com/security/cve/CVE-2025-6547/
ubuntu medium CVE-2025-6547 medium priority: Ubuntu including 1 source packages (node-pbkdf2), 8 status rows across 8 suites (bionic, focal, jammy, noble, oracular, plucky, questing, upstream): needs-triage 6, ignored 2. https://ubuntu.com/security/CVE-2025-6547

Affected software / configurations for CVE-2025-6547

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-6547

cvelogic Threat Intelligence