CVE-2026-1326

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 ImpactpartialSuccessful exploitation gives limited 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

3.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 87.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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

Analyzed. 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

2026-01-22 13:32Z7 MO AGO

Last updated

2026-02-23 08:52Z6 MO AGO

Reserved

2026-01-22

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.2

Document digest

639cb3a9e8c2c2e08742d2cd4ac9c04ae071c986b09a0615deaffbc0a6c95096

• vuldb.comVDB-342302 | Totolink NR1800X POST Request cstecgi.cgi setWanCfg command injectionhttps://vuldb.com/?id.342302vdb-entrytechnical-description
• vuldb.comVDB-342302 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/?ctiid.342302signaturepermissions-required
• vuldb.comSubmit #735787 | TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Command Injectionhttps://vuldb.com/?submit.735787third-party-advisory
• lavender-bicycle-a5a.notion.sitehttps://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-setWanCfg-2e453a41781f80b390f3e1ce0d9dd5b9?source=copy_linkexploit
• www.totolink.nethttps://www.totolink.net/product