CVE-2021-20473 json
IBM Sterling File Gateway User Interface 2.2.0.0 through 6.1.1.0 does not invalidate session after logout which could allow an authenticate…
published 2021-10-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7891
- cvss
- 6.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
IBM Sterling File Gateway User Interface 2.2.0.0 through 6.1.1.0 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 196944.
Patch / fix
- ibm.com/support/pages/node/6496785 advisory
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.3 | CVSS:3.0/I:L/AC:L/PR:L/AV:N/UI:N/A:L/C:L/S:U/RL:O/E:U/RC:C |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| CNA | 3.0 | 6.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Affected products
- IBM Sterling File Gateway
Classification
- Weakness
-
- CWE-613 DEPRECATED: Insufficient Session Expiration
References
-
ibm.com
/support/pages/node/6496785
patch, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/196944
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2021-20473
- NVD CVE-2021-20473
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.