CVE-2020-4839 json
IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by improper bounds checking.
published 2021-05-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26086
- cvss
- 4.9
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A remote privileged attacker could exploit this vulnerability and cause a denial of service. IBM X-Force ID: 190037.
Exploit prediction
1.52% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 4.9 | CVSS:3.0/PR:H/UI:N/AC:L/S:U/A:H/AV:N/I:N/C:N/RC:C/RL:O/E:U |
| NVD | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.0 | 4.9 | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- IBM 8335-GTB
- IBM 8335-GTA
- IBM 8335-GCA
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
ibm.com
/support/pages/node/6454303
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/190037
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2020-4839
- NVD CVE-2020-4839
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