How severe is CVE-2019-4173?

CVE-2019-4173 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-4173 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-4173?

CVE-2019-4173 primarily affects Ibm Cognos Controller. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-4173?

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

When was CVE-2019-4173 published?

CVE-2019-4173 was published on 2019-06-17 and last updated on 2026-06-17.

CVE-2019-4173

CVE-2019-4173 is a medium-severity vulnerability in Ibm Cognos Controller with a CVSS 3.x base score of 6.5. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Ibm Cognos Controller
Published: 2019-06-17
Last modified: 2026-06-17

Description

IBM Cognos Controller 10.2.0, 10.2.1, 10.3.0, 10.3.1, and 10.4.0 could allow a remote attacker to obtain sensitive information, caused by a flaw in the HTTP OPTIONS method, aka Optionsbleed. By sending an OPTIONS HTTP request, a remote attacker could exploit this vulnerability to read secret data from process memory and obtain sensitive information. IBM X-Force ID: 158878.

Frequently asked questions

What is CVE-2019-4173?: IBM Cognos Controller 10.2.0, 10.2.1, 10.3.0, 10.3.1, and 10.4.0 could allow a remote attacker to obtain sensitive information, caused by a flaw in the HTTP OPTIONS method, aka Optionsbleed. By sending an OPTIONS HTTP request, a remote attacker could exploit this vulnerability to read secret data from process memory and obtain sensitive information. IBM X-Force ID: 158878.
How severe is CVE-2019-4173?: CVE-2019-4173 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-4173 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-4173?: CVE-2019-4173 primarily affects Ibm Cognos Controller. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-4173?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-4173 published?: CVE-2019-4173 was published on 2019-06-17 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:ibm:cognos_controller:10.2.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cognos_controller:10.2.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cognos_controller:10.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cognos_controller:10.3.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cognos_controller:10.4.0:*:*:*:*:*:*:*

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