CVE-2020-8340
A cross-site scripting (XSS) vulnerability was discovered in the legacy IBM and Lenovo System x IMM2 (Integrated Management Module 2),…
- 6.3MediumCVSS base score
- 0.64%Exploitation in 30 daysEPSS · top 49% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A cross-site scripting (XSS) vulnerability was discovered in the legacy IBM and Lenovo System x IMM2 (Integrated Management Module 2), prior to version 5.60, embedded Baseboard Management Controller (BMC) web interface during an internal security review. This vulnerability could allow JavaScript code to be executed in the user's web browser if the user is convinced to visit a crafted URL, possibly through phishing. Successful exploitation requires specific knowledge about the user’s network to be included in the crafted URL. Impact is limited to the normal access restrictions and permissions of the user clicking the crafted URL, and subject to the user being able to connect to and already being authenticated to IMM2 or other systems. The JavaScript code is not executed on IMM2 itself.
Timeline
ID reserved
By lenovo
- 8 months later
· 8 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| lenovoCNA (assigner) | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.64% · top 49% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
Lenovo · System x IMM2 firmware for: x240, Machine Types: 7162, 2588; x440, Machine Type 7167, 2590 ; x3750 M4, Machine Type: 8753 ; x3250 M6, Machine type 3633, 3943 ; nx360 M5, Machine type 5465, 5467 ; x280/x480/x880 X6 , Machine Type 7196, 4258 ; x3850 X6 and x3950 X6, Machine type 6241 ; x3550 M5, Machine Type 5463, 8869 ; x3650 M5, Machine Type 5462, 8871; x3500 M5, Machine Type 5464, 5478
- affected unspecified – < 5.60
Lenovo · System x IMM2 firmware for x240 M5, Machine Types: 9532, 2591
- affected unspecified – < 5.61
- affected unspecified – < 5.60
What to do
Solution: Upgrade to IMM2 firmware version 5.60 (or newer) for the following System x products. - x240, Machine Types: 7162, 2588 - x440, Machine Type 7167, 2590 - x3750 M4, Machine Type: 8753 - x3250 M6, Machine type 3633, 3943 - nx360 M5, Machine type 5465, 5467 - x280/x480/x880 X6 , Machine Type 7196, 4258 - x3850 X6 and x3950 X6, Machine type 6241 - x3550 M5, Machine Type 5463, 8869 - x3650 M5, Machine Type 5462, 8871 - x3500 M5, Machine Type 5464, 5478 Upgrade to IMM2 firmware version 5.61 (or newer) for the following System x products. - x240 M5, Machine Types: 9532, 2591
References
References1
- https://support.lenovo.com/us/en/product_security/LEN-44717 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-29207 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-8340)Record last updated .