CVE-2026-74871 Vulnerability Analysis & Exploit Details

CVE-2026-74871
Vulnerability Scoring

6.2
/10
High Risk

If left unpatched, CVE-2026-74871 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-74871 Details

Status: Analyzed

Last updated: 🕟 10 Sep 2026, 16:56 UTC
Originally published on: 🕚 17 Aug 2026, 11:16 UTC

Time between publication and last update: 24 days

CVSS Release: version 3

CVSS3 Source

disclosure@vulncheck.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE-2026-74871 Vulnerability Summary

CVE-2026-74871: openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost.

Assessing the Risk of CVE-2026-74871

Access Complexity Graph

The exploitability of CVE-2026-74871 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-74871

With low attack complexity and no required privileges, CVE-2026-74871 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-74871, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-74871, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-74871 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2026-74871 poses no threat to data integrity.
  • Availability: None
    CVE-2026-74871 does not impact system availability.

CVE-2026-74871 References

External References

CWE Common Weakness Enumeration

CWE-916

CAPEC Common Attack Pattern Enumeration and Classification

  • Rainbow Table Password Cracking CAPEC-55 An attacker gets access to the database table where hashes of passwords are stored. They then use a rainbow table of pre-computed hash chains to attempt to look up the original password. Once the original password corresponding to the hash is obtained, the attacker uses the original password to gain access to the system.

Vulnerable Configurations

  • cpe:2.3:a:jahlives:openssl_encrypt:0.2.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.2.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.2.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.2.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.2.4:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.2.4:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.2.5:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.2.5:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.2.6:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.2.6:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.3.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.3.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.3.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.3.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.3.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.3.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.3.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.3.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.4.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.4.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.4.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.4.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.4.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.4.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.4.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.4.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.4.4:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.4.4:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.5.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.5.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.5.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.5.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.5.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.5.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.6.0:rc1:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.6.0:rc1:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.7.0:rc2:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.7.0:rc2:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.7.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.7.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.7.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.7.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.8.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.8.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.8.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.8.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.8.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.8.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:0.9.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:0.9.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.0.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.0.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.0.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.0.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.0.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.0.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.0.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.0.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.1.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.1.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.2.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.2.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.2.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.2.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.0:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.0:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.1:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.1:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.4:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.4:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.5:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.5:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.3.6:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.3.6:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:-:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:-:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta3:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta3:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta4:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta4:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta5:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta5:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta6:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta6:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta7:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta7:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta8:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.0:beta8:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:-:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:-:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:rc1:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:rc1:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:rc2:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.1:rc2:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.2:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.2:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.3:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.3:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.4:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.4:*:*:*:*:python:*:*
  • cpe:2.3:a:jahlives:openssl_encrypt:1.4.5:*:*:*:*:python:*:*
    cpe:2.3:a:jahlives:openssl_encrypt:1.4.5:*:*:*:*:python:*:*

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