CVE-2010-4345

Command Injection in Exim 4

Verified by Precogs Threat Research
Last Updated: Apr 21, 2026
Base Score
7.8HIGH

Executive Summary

CVE-2010-4345 is a high severity vulnerability affecting appsec. It is classified as CWE-77. This vulnerability is actively being exploited in the wild.

Precogs AI Insight

"At its core, this issue originates from within Exim 4., allowing the insecure processing of malicious payloads. By manipulating this weakness, a threat actor can gain unauthorized read or write access, effectively hijacking underlying configurations. The Precogs AI's Code Property Graph analysis traces untrusted input to block malicious interactions before they reach production."

Exploit Probability (EPSS)
Moderate (6.9%)
Public POC
Available
Exploit Probability
Elevated (52%)
Public POC
Actively Exploited
Affected Assets
appsecCWE-77

What is this vulnerability?

CVE-2010-4345 is categorized as a high Command Injection flaw with a CVSS base score of 7.8. Based on our vulnerability intelligence, this issue occurs when the application fails to securely handle untrusted data boundaries.

Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive.

This architectural defect enables adversaries to bypass intended security controls, directly manipulating the application's execution state or data layer. Immediate strategic intervention is required.

Risk Assessment

MetricValue
CVSS Base Score7.8 (HIGH)
Vector StringCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
PublishedDecember 14, 2010
Last ModifiedApril 21, 2026
Related CWEsCWE-77

Impact on Systems

Data Exfiltration: Attackers can extract sensitive data from backend databases, configuration files, or internal services.

Authentication Bypass: Exploiting this flaw may allow unauthorized access to protected resources and administrative interfaces.

Lateral Movement: Once initial access is gained, attackers can pivot to internal systems and escalate privileges.

How to Fix and Mitigate CVE-2010-4345

  1. Apply Vendor Patches Immediately: This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog. Apply updates per vendor instructions.
  2. Verify Patch Deployment: Confirm all instances are updated using Precogs continuous monitoring.
  3. Review Audit Logs: Investigate historical access logs for indicators of compromise related to this attack surface.
  4. Implement Defense-in-Depth: Deploy WAF rules, network segmentation, and endpoint detection to limit blast radius.

Defending with Precogs AI

Precogs AI Analysis Engine identifies this vulnerability class through semantic code analysis powered by Code Property Graph (CPG) technology, performing inter-procedural taint tracking to detect injection flaws, broken authentication, and insecure data flows across your entire codebase.

Use Precogs to continuously scan your codebase, binaries, APIs, and infrastructure for this vulnerability class and related attack patterns. Our AI-powered detection engine combines static analysis with threat intelligence to identify exploitable weaknesses before attackers do.

Start scanning with Precogs →

Vulnerability Code Signature

Attack Data Flow

StageDetail
SourceUntrusted User Input
VectorInput flows through the application logic without sanitization
SinkExecution or Rendering Sink
ImpactApplication compromise, Logic Bypass, Data Exfiltration

Vulnerable Code Pattern

# ❌ VULNERABLE: Unsanitized Input Flow
def process_request(request):
    user_input = request.GET.get('data')
    # Taint sink: processing untrusted data
    execute_logic(user_input)
    return {"status": "success"}

Secure Code Pattern

# ✅ SECURE: Input Validation & Sanitization
def process_request(request):
    user_input = request.GET.get('data')
    
    # Sanitized boundary check
    if not is_valid_format(user_input):
        raise ValueError("Invalid input format")
        
    sanitized_data = sanitize(user_input)
    execute_logic(sanitized_data)
    return {"status": "success"}

How Precogs Detects This

Precogs AI Analysis Engine maps untrusted input directly to execution sinks to catch complex application security vulnerabilities.\n

Related Vulnerabilitiesvia CWE-77

CVE-2026-44997.3 HIGH

A vulnerability was determined in D-Link DIR-820LW 2.

CWE-77CWE-78
CVE-2026-44977.3 HIGH

A vulnerability was determined in Totolink WA300 5.

CWE-77CWE-78
CVE-2026-44965.3 MEDIUM

A vulnerability was found in sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880.

CWE-77CWE-78
CVE-2025-156070 UNKNOWN

A command injection vulnerability on AX53 v1 occurs in mscd debug functionality due to insufficient input handling, allowing log redirection to arbitrary files and concatenation of unvalidated file content into shell commands, enabling authenticated attackers to inject and execute arbitrary commands.

CWE-77
CVE-2026-44684.7 MEDIUM

A vulnerability was determined in Comfast CF-AC100 2.

CWE-74CWE-77
CVE-2026-44674.7 MEDIUM

A vulnerability was found in Comfast CF-AC100 2.

CWE-74CWE-77

Is your system affected?

Precogs AI detects CVE-2010-4345 in compiled binaries, LLMs, and application layers — even without source code access.