9.1

CVE-2025-6545: pbkdf2 silently returns predictable uninitialized/zero-filled memory for non-normalized or unimplemented algos supported by Node.js

Deferred
AliasesUBUNTU-CVE-2025-6545USN-8452-1DEBIAN-CVE-2025-6545
Published 23-06-2025Last modified 23-06-2025

Vulnerability summary

CVE-2025-6545 is a critical (CVSS 9.1) Improper Input Validation vulnerability in node-pbkdf2. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 38.9% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.45%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2025:15280-1OPENSUSE-SU-2026:11126-1SUSE-SU-2025:3744-1CGA-HFHH-VC5H-3M53

Timeline

  1. 23-06-2025
    PublishedVulnerability first disclosed.
  2. 23-06-2025
    Last modifiedVulnerability information updated.

Description

Improper Input Validation vulnerability in pbkdf2 allows Signature Spoofing by Improper Validation. This vulnerability is associated with program files lib/to-buffer.Js. This issue affects pbkdf2: from 3.0.10 through 3.1.2.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.45% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard21 products
  • gitlab-rails-ce-18.1< 18.1.6-r19
  • gitlab-rails-ce-18.10All versions (No fix recorded)
  • gitlab-rails-ce-18.11< 18.11.6-r7
  • gitlab-rails-ce-18.5All versions (No fix recorded)
  • gitlab-rails-ce-18.6All versions (No fix recorded)
Debian1 product
  • node-pbkdf2All versions (No fix recorded) | < 3.1.3+~3.1.2-1
Npm1 product
  • pbkdf2≥ 3.0.10, < 3.1.3
Ubuntu1 product
  • node-pbkdf2< 3.0.14-2ubuntu0.1~esm1 | < 3.0.16-1ubuntu0.1~esm1 | < 3.1.2-2ubuntu0.1~esm1 | < 3.1.2-3ubuntu0.1~esm1

4 vendors · 24 products

References

11 links
Show all 11 references