CVE-2009-0543

Exp

ProFTPD Server 1.3.1, with NLS support enabled, allows remote attackers to bypass SQL injection protection mechanisms via invalid, encoded multibyte characters, which are not properly handled in (1) mod_sql_mysql and (2) mod_sql_postgres.

Published: 2009-02-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0543 is rated High Exploit Risk (76.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 14.89%, 96th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-0543

EDB-ID Source Kind Published Link
8037 exploit_db edb 2009-02-10 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-0543

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 2026-06-26 14.24% 14.89% +0.65%
2 2026-06-15 0.50% 14.24% +13.74%
3 2026-05-22 — 0.50% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0543

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2009-0543

OS Trackers for CVE-2009-0543

vendor priority summary link
debian medium CVE-2009-0543 medium priority: Debian including 1 source packages (proftpd-dfsg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-0543
gentoo normal CVE-2009-0543: 1 GLSA(s) (200903-27), 1 atom(s) (net-ftp/proftpd); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-0543
ubuntu medium CVE-2009-0543 medium priority: Ubuntu including 1 source packages (proftpd-dfsg), 10 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): not-affected 5, ignored 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2009-0543

Affected software / configurations for CVE-2009-0543

Vendor Product Version Raw CPE
proftpd proftpd 1.3.1 cpe:2.3:a:proftpd:proftpd:1.3.1:*:*:*:*:*:*:*

References for CVE-2009-0543

cvelogic Threat Intelligence