CVE-2021-20473: ibm sterling_file_gateway Insufficient Session Expiration
Modified
Published 07-10-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-20473 is a medium (CVSS 6.5) Insufficient Session Expiration vulnerability in ibm sterling_file_gateway. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.2% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 07-10-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 2 sources · 3 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
Medium 6.3Preferred score · CVE.org (CNA)
CVSS:3.0/I:L/AC:L/PR:L/AV:N/UI:N/A:L/C:L/S:U/RL:O/E:U/RC:CSourcesAll 2 agree
- NVDNIST6.3MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.48%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.48% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ibm1 product
- sterling_file_gateway2.2.0.0 | 6.0.0.0 | 5.2.6.5_3 | 6.0.3.4 | 6.1.0.0 | 6.1.0.1 | ≥ 2.2.0.0, ≤ 5.2.6.5_3 | ≥ 6.0.0.0, ≤ 6.0.3.4 | ≥ 6.1.0.0, ≤ 6.1.0.1
1 vendor · 1 product