CVE-2026-16083

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 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

0.72% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 51.1% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/VI:L/VA:N/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 2026-07-20.

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

2026-07-18 08:30Z1 MO AGO

Last updated

2026-07-20 17:36Z1 MO AGO

Reserved

2026-07-17

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

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

Weaknesses

• CWE-287Improper AuthenticationClass
• CWE-294Authentication Bypass by Capture-replayBase

Data version

5.2

Document digest

f1631b217d6191bb4dcc03365189146c5633658d83890861dd8626df8bf8925e

• vuldb.comVDB-379795 | Sipeed PicoClaw LINE Webhook line.go webhook.ParseRequest authentication replayhttps://vuldb.com/vuln/379795vdb-entrytechnical-description
• vuldb.comVDB-379795 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/379795/ctisignaturepermissions-required
• vuldb.comCVE-2026-16083 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-16083third-party-advisory
• vuldb.comSubmit #852945 | Sipeed PicoClaw <= 0.2.9 Authentication Bypass by Capture-replay (CWE-294)https://vuldb.com/submit/852945third-party-advisory
• github.comhttps://github.com/sipeed/picoclaw/issues/3073exploitissue-tracking
• github.comhttps://github.com/sipeed/picoclaw/product