CVE-2021-27418: ge multilin_b30_firmware Improper Input Validation
Vulnerability summary
CVE-2021-27418 is a medium (CVSS 6.1) Improper Input Validation vulnerability in ge multilin_b30_firmware. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.4% of scored vulnerabilities.
Timeline
- 23-03-2022PublishedVulnerability first disclosed.
- 16-04-2025Last modifiedVulnerability information updated.
Description
GE UR firmware versions prior to version 8.1x supports web interface with read-only access. The device fails to properly validate user input, making it possible to perform cross-site scripting attacks, which may be used to send a malicious script. Also, UR Firmware web server does not perform HTML encoding of user-supplied strings.
CVSS metrics
3 scores · 2 sources · 2 versions- CVE.orgCNA5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.61%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
0.00 pp
From 0.61% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Affected systems
Ge20 products
- multilin_b30_firmware< 8.10
- multilin_b90_firmware< 8.10
- multilin_c30_firmware< 8.10
- multilin_c60_firmware< 8.10
- multilin_c70_firmware< 8.10
1 vendor · 20 products
References
2 links- www.cisa.gov/uscert/ics/advisories/icsa-21-075-02X Refsource CONFIRMMitigationThird Party AdvisoryUS Government Resource