CVE-2021-20376
MEDIUMCVSS 4.3/10EPSS 0.70%
Last modified
CVE-2021-20376 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow an authenticated attacker to enumerate usernames due to there being an observable discrepancy in returned messages. IBM X-Force ID: 195568.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
Description
IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow an authenticated attacker to enumerate usernames due to there being an observable discrepancy in returned messages. IBM X-Force ID: 195568.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Sterling B2b Integrator | >= 2.2.0.0, <= 5.2.6.5_3 |
| Ibm | Sterling B2b Integrator | >= 6.0.0.0, <= 6.0.3.4 |
| Ibm | Sterling B2b Integrator | >= 6.1.0.0, <= 6.1.0.1 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/195568VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6496789Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/195568VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6496789Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20376?
IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow an authenticated attacker to enumerate usernames due to there being an observable discrepancy in returned messages. IBM X-Force ID: 195568.
How severe is CVE-2021-20376?
CVE-2021-20376 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20376?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20376?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST