How severe is CVE-2016-2991?

CVE-2016-2991 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-2991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-2991?

CVE-2016-2991 primarily affects Ibm Lotus Protector For Mail Security. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-2991?

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

When was CVE-2016-2991 published?

CVE-2016-2991 was published on 2016-12-01 and last updated on 2026-06-17.

CVE-2016-2991

CVE-2016-2991 is a medium-severity vulnerability in Ibm Lotus Protector For Mail Security with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Lotus Protector For Mail Security
Published: 2016-12-01
Last modified: 2026-06-17

Description

Multiple cross-site scripting (XSS) vulnerabilities in IBM Lotus Protector for Mail Security 2.8.0.0 through 2.8.1.0 before 2.8.1.0-22115 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2016-2991?: Multiple cross-site scripting (XSS) vulnerabilities in IBM Lotus Protector for Mail Security 2.8.0.0 through 2.8.1.0 before 2.8.1.0-22115 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2016-2991?: CVE-2016-2991 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-2991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-2991?: CVE-2016-2991 primarily affects Ibm Lotus Protector For Mail Security. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-2991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-2991 published?: CVE-2016-2991 was published on 2016-12-01 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:lotus_protector_for_mail_security:2.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:lotus_protector_for_mail_security:2.8.1:*:*:*:*:*:*:*

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CVE-2014-0887 — High (CVSS 7.1): The Admin Web UI in IBM Lotus Protector for Mail Security 2.8.x before 2.8.1-22905 allows remote authenticated users to…
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CVE-2012-2955 — Medium (CVSS 4.3): Multiple cross-site scripting (XSS) vulnerabilities in the administrative user interface in IBM Lotus Protector for…
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