lin-snow Ech0 up to 5.4.1 crypto.go MD5Encrypt risky encryption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.6$0-$5k2.62-

Summaryinfo

A vulnerability classified as problematic was found in lin-snow Ech0 up to 5.4.1. This affects the function MD5Encrypt of the file internal/util/crypto/crypto.go. Executing a manipulation can lead to risky encryption. This vulnerability is handled as CVE-2026-77151. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in lin-snow Ech0 up to 5.4.1 and classified as problematic. This vulnerability affects the function MD5Encrypt of the file internal/util/crypto/crypto.go. The manipulation with an unknown input leads to a risky encryption vulnerability. The CWE definition for the vulnerability is CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. As an impact it is known to affect confidentiality.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-77151. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.

Upgrading to version 5.4.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 9ce19a3b0d0765086a655f45d3a706ec1810404f is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Risky encryption
CWE: CWE-327 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Ech0 5.4.2
Patch: 9ce19a3b0d0765086a655f45d3a706ec1810404f

Timelineinfo

08/20/2026 Advisory disclosed
08/20/2026 +0 days VulDB entry created
08/20/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 314
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-77151 (🔒)
GCVE (CVE): GCVE-0-2026-77151
GCVE (VulDB): GCVE-100-393736

Entryinfo

Created: 08/20/2026 16:03
Changes: 08/20/2026 16:03 (60)
Complete: 🔍
Submitter: summmm
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #881015: lin-snow Ech0 5.4.1 Unsalted MD5 Password Hashing in Ech0 Enables Mass Credential Cr (by summmm)

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