CVE-2021-27211

HIGH

steghide 0.5.1 - Hidden Data Detection via Weak PRNG Seed

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-27211. PoCs published by b4shfire.

AI-analyzed exploit summary Stegcrack exploits CVE-2021-27211 in Steghide by brute-forcing the 32-bit seed derived from the password, allowing extraction of hidden data without knowing the password. It leverages the weak seed generation mechanism in Steghide to bypass encryption.

Description

steghide 0.5.1 relies on a certain 32-bit seed value, which makes it easier for attackers to detect hidden data.

Exploits (1)

nomisec WORKING POC 6 stars
by b4shfire · poc
https://github.com/b4shfire/stegcrack

Stegcrack exploits CVE-2021-27211 in Steghide by brute-forcing the 32-bit seed derived from the password, allowing extraction of hidden data without knowing the password. It leverages the weak seed generation mechanism in Steghide to bypass encryption.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Steghide (versions affected by CVE-2021-27211)
No auth needed
Prerequisites: Access to a file with data hidden using Steghide · Dependencies: jpeglib, zlib
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://sourceforge.net/projects/steghide/files/steghide/0.5.1/
Product x_refsource_misc
https://github.com/b4shfire/stegcrack

Scores

CVSS v3 7.5
EPSS 0.0323
EPSS Percentile 86.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-335
Status published
Products (1)
steghide_project/steghide 0.5.1
Published Feb 15, 2021
Tracked Since Feb 18, 2026