Is this vulnerability directly exploitable over the network?

Not by itself. Exploitation generally requires access to ciphertexts produced by Jervis and the ability to perform offline analysis or brute-force attempts against the passphrase-derived keys. The weakness reduces the cryptographic strength, making such attacks more practical when other conditions are met.

What level of access does an attacker need?

An attacker typically needs read access to Jervis-encrypted data (for example, in source repositories, configuration files, or backups). Additional knowledge about likely passphrases or corresponding plaintexts increases the practicality of an attack.

What is the safest general fix pattern?

Replace deterministic salt derivation from `sha256Sum(passphrase)` with a standard key derivation function that uses a cryptographically secure random salt and configurable work factor. Re-encrypt sensitive data using the improved scheme and consider rotating passphrases or keys as part of the migration.

Severity:

HIGH RISK

(7.5)

Insufficient Key Randomness (CWE-326) in Jervis Encryption Salt Derivation

CVE-2025-68703

Published:

Jan 13, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Cryptographic Weakness

CWE:

CWE-326

Impact:

Loss of Cryptographic Confidentiality

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Cryptographic Weakness

CWE:

CWE-326

Impact:

Loss of Cryptographic Confidentiality

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Insufficient Key Randomness (CWE-326) in Jervis Encryption Salt Derivation

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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