How severe is CVE-2011-1902?

CVE-2011-1902 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1902 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1902?

CVE-2011-1902 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-2011-1902?

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

When was CVE-2011-1902 published?

CVE-2011-1902 was published on 2011-05-05 and last updated on 2026-06-16.

CVE-2011-1902

CVE-2011-1902 is a medium-severity vulnerability in Proofpoint Messaging Security Gateway with a CVSS 2.0 base score of 5.0. 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-22.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Proofpoint Messaging Security Gateway
Published: 2011-05-05
Last modified: 2026-06-16

Description

Directory traversal vulnerability 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 read arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2011-1902?: Directory traversal vulnerability 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 read arbitrary files via unspecified vectors.
How severe is CVE-2011-1902?: CVE-2011-1902 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1902 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1902?: CVE-2011-1902 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-2011-1902?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1902 published?: CVE-2011-1902 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-2011-1904 — High (CVSS 7.5): An unspecified function in the web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier…
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…

All CVEs affecting Proofpoint Messaging Security Gateway →

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