CVE-2021-20556
MEDIUMCVSS 5.3/10EPSS 0.46%
Last modified
CVE-2021-20556 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.
Description
IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Cognos Controller | 10.4.1 |
| Ibm | Cognos Controller | 10.4.2 |
| Ibm | Cognos Controller | 11.0.0 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/199181Vendor Advisory
- https://www.ibm.com/support/pages/node/7149876Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/199181Vendor Advisory
- https://www.ibm.com/support/pages/node/7149876Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-20556?
IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.
How severe is CVE-2021-20556?
CVE-2021-20556 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20556?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-20556?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST