How severe is CVE-2009-0543?

CVE-2009-0543 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-0543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0543?

CVE-2009-0543 affects Proftpd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-0543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0543 published?

CVE-2009-0543 was published on 2009-02-12 and last updated on 2026-06-16.

CVE-2009-0543

CVE-2009-0543 is a medium-severity vulnerability in Proftpd with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Proftpd
Published: 2009-02-12
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2009-0543?: 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.
How severe is CVE-2009-0543?: CVE-2009-0543 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-0543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0543?: CVE-2009-0543 affects Proftpd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-0543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0543 published?: CVE-2009-0543 was published on 2009-02-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:proftpd:proftpd:1.3.1:*:*:*:*:*:*:*

More vulnerabilities in Proftpd

CVE-2015-3306 — Critical (CVSS 10.0): The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and…
CVE-2010-4221 — Critical (CVSS 10.0): Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow…
CVE-2010-20103 — Critical (CVSS 9.8): A malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and…
CVE-2019-12815 — Critical (CVSS 9.8): An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for remote code execution and…
CVE-2011-4130 — Critical (CVSS 9.0): Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute…
CVE-2026-63090 — High (CVSS 8.8): ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the mod_sftp module that…

All CVEs affecting Proftpd →

Other CWE-89 (SQL Injection) vulnerabilities

CVE-2026-20030 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team…
CVE-2026-72811 — Critical (CVSS 10.0): SiYuan versions <= v3.7.2 contain a SQL injection vulnerability in the backlink/mention search query…
CVE-2026-72851 — Critical (CVSS 10.0): Budibase before 3.40.0 contains an unauthenticated SQL injection vulnerability in webhook-triggered automations with…
CVE-2026-72899 — Critical (CVSS 10.0): Metabase allows an unauthenticated attacker to inject arbitrary SQL via a publicly shared card or dashboard that…
CVE-2026-72898 — Critical (CVSS 10.0): Metabase allows a remote, unauthenticated attacker to inject arbitrary SQL via the '/reset_password' database endpoint…
CVE-2026-48330 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an SQL Command ('SQL…

Browse all CWE-89 (SQL Injection) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

185.161.16.2 (ipv4-addr)