CVE-2026-1803

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/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 2026-06-17.

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

2026-02-03 20:02Z7 MO AGO

Last updated

2026-02-23 09:15Z6 MO AGO

Reserved

2026-02-03

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Critical (CVSS 9.2)

CNA CVSS vector

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

Weaknesses

• CWE-1392Use of Default CredentialsBase

Data version

5.2

Document digest

69112f97dbfe34c9666af888da6200fa9f1f076cf9a50e19cc42ac4d790af476

• vuldb.comVDB-343976 | Ziroom ZHOME A0101 Dropbear SSH Service default credentialshttps://vuldb.com/?id.343976vdb-entry
• vuldb.comVDB-343976 | CTI Indicators (IOB, IOC)https://vuldb.com/?ctiid.343976signaturepermissions-required
• vuldb.comSubmit #745497 | Ziroom Smart Ziroom Smart Gateway (ZH-A0101) ZH-A0101 1.0.1.0 Backdoorhttps://vuldb.com/?submit.745497third-party-advisory
• vuldb.comSubmit #745529 | Ziroom Smart Smart Gateway ZH-A0101 ZH-A0101 1.0.1.0 Credentials Management (Duplicate)https://vuldb.com/?submit.745529third-party-advisory
• github.comhttps://github.com/Blackhole23-Lab/-/blob/main/vulns/ssh-backdoor.mdrelated
• github.comhttps://github.com/Blackhole23-Lab/-/blob/main/vulns/ssh-backdoor.md#proof-of-conceptexploit