CVE-2026-7121

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 80.0% of scored records. A rank, not a probability.

NVD base score

8.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-25.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-27 11:45Z6 MO AGO

Last updated

2026-04-27 16:33Z6 MO AGO

Reserved

2026-04-26

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

dabc25d5a7b36b86ec81ddb543b155872030aeb4844efac22a1f7b9aaa5b7a49

• vuldb.comVDB-359720 | Totolink A8000RU CGI cstecgi.cgi setWizardCfg os command injectionhttps://vuldb.com/vuln/359720vdb-entrytechnical-description
• vuldb.comVDB-359720 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/359720/ctisignaturepermissions-required
• vuldb.comSubmit #800933 | Totolink A8000RU 7.1cu.643_b20200521 Command Injectionhttps://vuldb.com/submit/800933third-party-advisory
• github.comhttps://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_306/README.mdexploit
• www.totolink.nethttps://www.totolink.net/product