CVE-2023-46133Network attack vector

Cryptographic compromise via single-iteration SHA-1 PBKDF2 defaults

Published Oct 25, 2023 · Updated Sep 10, 2024

Weak cryptography in Entronad crypto-es before 2.1.0 allows attackers to compromise PBKDF2-derived passwords or signatures via offline attacks. The PBKDF2 implementation in lib/pbkdf2.js silently defaults omitted options to SHA-1 and one iteration, sharply reducing derivation cost. Exploitation requires a consuming application to use those defaults and expose or rely on the derived password material or signatures.

CVSS severity9.1
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Weak cryptography in Entronad crypto-es before 2.1.0 allows attackers to compromise PBKDF2-derived passwords or signatures via offline attacks. The PBKDF2 implementation in lib/pbkdf2.js silently defaults omitted options to SHA-1 and one iteration, sharply reducing derivation cost. Exploitation requires a consuming application to use those defaults and expose or rely on the derived password material or signatures.

The record

CVE
CVE-2023-46133
Published
Oct 25, 2023
Updated
Sep 10, 2024
Vendor
Entronad
Product
crypto-es
Classifications
CWE-327, CWE-916, CWE-328, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.1.0
  2. Affected versionversion=< 2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Entronad · crypto-esversion=0 <2.1.0; version=< 2.1.0

Published CVSS scores

9.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
CWE-916Use of Password Hash With Insufficient Computational Effort
CWE-328Use of Weak Hash
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo