How severe is CVE-2011-0456?

CVE-2011-0456 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-0456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0456?

CVE-2011-0456 primarily affects Otrs. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-0456 published?

CVE-2011-0456 was published on 2011-03-11 and last updated on 2026-06-16.

CVE-2011-0456

CVE-2011-0456 is a high-severity vulnerability in Otrs with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Otrs
Published: 2011-03-11
Last modified: 2026-06-16

Description

webscript.pl in Open Ticket Request System (OTRS) 2.3.4 and earlier allows remote attackers to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability."

Frequently asked questions

What is CVE-2011-0456?: webscript.pl in Open Ticket Request System (OTRS) 2.3.4 and earlier allows remote attackers to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability."
How severe is CVE-2011-0456?: CVE-2011-0456 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-0456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0456?: CVE-2011-0456 primarily affects Otrs. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-0456 published?: CVE-2011-0456 was published on 2011-03-11 and last updated on 2026-06-16.

References

Affected products (29)

cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.6:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.7:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.8:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.1.9:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.8:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.2.9:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.3.3:*:*:*:*:*:*:*

More vulnerabilities in Otrs

CVE-2026-48188 — Critical (CVSS 9.1): An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an…
CVE-2013-4717 — High (CVSS 8.8): Multiple SQL injection vulnerabilities in Open Ticket Request System (OTRS) Help Desk 3.0.x before 3.0.22, 3.1.x before…
CVE-2017-17476 — High (CVSS 8.8): Open Ticket Request System (OTRS) 4.0.x before 4.0.28, 5.0.x before 5.0.26, and 6.0.x before 6.0.3, when cookie support…
CVE-2017-16921 — High (CVSS 8.8): In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including…
CVE-2017-16664 — High (CVSS 8.8): Code injection exists in Kernel/System/Spelling.pm in Open Ticket Request System (OTRS) 5 before 5.0.24, 4 before…
CVE-2017-15864 — High (CVSS 8.8): In the Agent Frontend in Open Ticket Request System (OTRS) 3.3.x through 3.3.18, with a crafted URL it is possible to…

All CVEs affecting Otrs →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →