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CVE-2019-4173

22
FAUCET Score

CVE-2019-4173, also known as Optionsbleed, is a sensitive information disclosure vulnerability affecting IBM Cognos Controller versions 10.2.0 through 10.4.0. A remote attacker can exploit a flaw in the HTTP OPTIONS method to read secret data from process memory. This vulnerability carries a CVSS v3.1 score of 6.5 (Medium), indicating a low attack complexity and the potential for high confidentiality impact without affecting integrity or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
10.2.0CPE matchmatch criteria
cpe:2.3:a:ibm:cognos_controller:10.2.0:*:*:*:*:*:*:*
10.2.1CPE matchmatch criteria
cpe:2.3:a:ibm:cognos_controller:10.2.1:*:*:*:*:*:*:*
10.3.0CPE matchmatch criteria
cpe:2.3:a:ibm:cognos_controller:10.3.0:*:*:*:*:*:*:*
10.3.1CPE matchmatch criteria
cpe:2.3:a:ibm:cognos_controller:10.3.1:*:*:*:*:*:*:*
10.4.0CPE matchmatch criteria
cpe:2.3:a:ibm:cognos_controller:10.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.81%
Probability of exploitation in next 30 days
EPSS Percentile
76.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0181 is in the 89th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/158878
VDB EntryVendor Advisory
ibm.com / support/docview.wss
PatchVendor Advisory