How severe is CVE-2011-1904?

CVE-2011-1904 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-1904 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1904?

CVE-2011-1904 primarily affects Proofpoint Messaging Security Gateway. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1904?

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-2011-1904 published?

CVE-2011-1904 was published on 2011-05-05 and last updated on 2026-06-16.

CVE-2011-1904

CVE-2011-1904 is a high-severity vulnerability in Proofpoint Messaging Security Gateway 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: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Proofpoint Messaging Security Gateway
Published: 2011-05-05
Last modified: 2026-06-16

Description

An unspecified function in the web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier in Proofpoint Protection Server 5.5.3, 5.5.4, 5.5.5, 6.0.2, 6.1.1, and 6.2.0 allows remote attackers to execute arbitrary commands via unknown vectors, related to a "command injection" issue.

Frequently asked questions

What is CVE-2011-1904?: An unspecified function in the web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier in Proofpoint Protection Server 5.5.3, 5.5.4, 5.5.5, 6.0.2, 6.1.1, and 6.2.0 allows remote attackers to execute arbitrary commands via unknown vectors, related to a "command injection" issue.
How severe is CVE-2011-1904?: CVE-2011-1904 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-1904 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1904?: CVE-2011-1904 primarily affects Proofpoint Messaging Security Gateway. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1904?: 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-2011-1904 published?: CVE-2011-1904 was published on 2011-05-05 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:proofpoint:messaging_security_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:5.5.3:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:5.5.4:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:5.5.5:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:6.1.1:*:*:*:*:*:*:*
cpe:2.3:a:proofpoint:protection_server:6.2.0:*:*:*:*:*:*:*

More vulnerabilities in Proofpoint Messaging Security Gateway

CVE-2011-1903 — High (CVSS 7.5): SQL injection vulnerability in an unspecified function in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and…
CVE-2011-1901 — High (CVSS 7.5): The mail-filter web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier in Proofpoint…
CVE-2011-1905 — Medium (CVSS 6.8): Multiple cross-site request forgery (CSRF) vulnerabilities in unspecified administrative modules in Proofpoint…
CVE-2011-1902 — Medium (CVSS 5.0): Directory traversal vulnerability in the web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and…

All CVEs affecting Proofpoint Messaging Security Gateway →

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 →