CVE-2021-20354
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse...
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.
- Record
CVE-2021-20354- CVSS 3.0
- 5.9 Medium
CVSS:3.0/I:N/UI:N/A:N/AV:N/PR:N/AC:H/S:U/C:H/RL:O/RC:C/E:U - Updated
- 2026-11-02
EUVDEUVD-2021-7772
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.
- Record
EUVD-2021-7772- CVSS 3.0
- 5.9 Medium
CVSS:3.0/I:N/UI:N/A:N/AV:N/PR:N/AC:H/S:U/C:H/RL:O/RC:C/E:U - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qq58-vj5v-jxhvNo score
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse...
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.
- Record
GHSA-qq58-vj5v-jxhv- Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.
- Record
CVE-2021-20354- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:C/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20354 is a medium vulnerability (CVSS 5.9) in Ibm Websphere Application Server, published February 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.10%, the 90th percentile. No source names a fixed version.