transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.
CVE-2010-2023 is a security vulnerability that . Impacting 1 product from exim organizations running these solutions should prioritize assessment and patching.
Documented in 2010, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.
2010-06-07T17:12:48.247
2025-04-11T00:51:21.963
Deferred
CVSSv2: 4.4 (MEDIUM)
AV:L/AC:M/Au:N/C:P/I:P/A:P
3.4
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | exim | exim | ≤ 4.71 | Yes |
| Application | exim | exim | 4.10 | Yes |
| Application | exim | exim | 4.20 | Yes |
| Application | exim | exim | 4.21 | Yes |
| Application | exim | exim | 4.22 | Yes |
| Application | exim | exim | 4.23 | Yes |
| Application | exim | exim | 4.24 | Yes |
| Application | exim | exim | 4.30 | Yes |
| Application | exim | exim | 4.31 | Yes |
| Application | exim | exim | 4.32 | Yes |
| Application | exim | exim | 4.33 | Yes |
| Application | exim | exim | 4.34 | Yes |
| Application | exim | exim | 4.40 | Yes |
| Application | exim | exim | 4.41 | Yes |
| Application | exim | exim | 4.42 | Yes |
| Application | exim | exim | 4.43 | Yes |
| Application | exim | exim | 4.44 | Yes |
| Application | exim | exim | 4.50 | Yes |
| Application | exim | exim | 4.51 | Yes |
| Application | exim | exim | 4.52 | Yes |
| Application | exim | exim | 4.53 | Yes |
| Application | exim | exim | 4.54 | Yes |
| Application | exim | exim | 4.60 | Yes |
| Application | exim | exim | 4.61 | Yes |
| Application | exim | exim | 4.62 | Yes |
| Application | exim | exim | 4.63 | Yes |
| Application | exim | exim | 4.64 | Yes |
| Application | exim | exim | 4.65 | Yes |
| Application | exim | exim | 4.66 | Yes |
| Application | exim | exim | 4.67 | Yes |
| Application | exim | exim | 4.68 | Yes |
| Application | exim | exim | 4.69 | Yes |
| Application | exim | exim | 4.70 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For exim's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.