bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not use the O_EXCL flag to create files during decompression and does not warn the user if an existing file would be overwritten, which could allow attackers to overwrite files via a bzip2 archive.
Conclusion & alert: CVE-2002-0759 is rated Moderate Risk (46.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.83%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-08-01 | 0.47% | 0.83% | +0.36% |
| 2 | 2025-03-30 | 0.68% | 0.47% | -0.21% |
| 3 | 2025-03-29 | — | 0.68% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bzip | bzip2 | 0.9.0 | cpe:2.3:a:bzip:bzip2:0.9.0:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.0a | cpe:2.3:a:bzip:bzip2:0.9.0a:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.0b | cpe:2.3:a:bzip:bzip2:0.9.0b:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.0c | cpe:2.3:a:bzip:bzip2:0.9.0c:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.5a | cpe:2.3:a:bzip:bzip2:0.9.5a:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.5b | cpe:2.3:a:bzip:bzip2:0.9.5b:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.5c | cpe:2.3:a:bzip:bzip2:0.9.5c:*:*:*:*:*:*:* |
| bzip | bzip2 | 0.9.5d | cpe:2.3:a:bzip:bzip2:0.9.5d:*:*:*:*:*:*:* |
| bzip | bzip2 | 1.0 | cpe:2.3:a:bzip:bzip2:1.0:*:*:*:*:*:*:* |
| bzip | bzip2 | 1.0.1 | cpe:2.3:a:bzip:bzip2:1.0.1:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-039.0.txt | |
| ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:25.bzip2.asc | Patch Vendor Advisory |
| http://www.iss.net/security_center/static/9126.php | Patch Vendor Advisory |
| http://www.securityfocus.com/bid/4774 | Patch Vendor Advisory |