CVE-2021-20376: ibm sterling_b2b_integrator Observable Discrepancy
CVSS: 4.3v3.0MediumModified
Published 07-10-2021Last modified 17-09-2024
Vulnerability summary
CVE-2021-20376 is a medium (CVSS 4.3) Observable Discrepancy vulnerability in ibm sterling_b2b_integrator. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities.
CVSS score
4.3/10
010
Medium · v3.0 (CVE.org)EPSS score
0.73%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-10-2021PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 2 sources · 3 versionsMedium 4.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NSourcesSingle source
Medium 4.3Preferred score · CVE.org (CNA)
CVSS:3.0/I:N/AC:L/PR:L/AV:N/UI:N/A:N/C:L/S:U/RL:O/E:U/RC:CSourcesAll 2 agree
- NVDNIST4.3MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.73%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
0.00 pp
From 0.73% on 21-09-2026
21-09-202621-10-2026
EPSS score0.73%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ibm2 products
- sterling_b2b_integrator≥ 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
- 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
1 vendor · 2 products