CVE-2024-4020

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

1.57% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 73.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

2024-04-20 23:00Z2 YR AGO

Last updated

2024-08-01 20:26Z2 YR AGO

Reserved

2024-04-20

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

54bbd5d26214ffb0c2e0798b41a1bc1052436ac3b894e68b784bc03f8d305327

• vuldb.comVDB-261671 | Tenda FH1206 addressNat fromAddressNat buffer overflowhttps://vuldb.com/?id.261671vdb-entrytechnical-description
• vuldb.comVDB-261671 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/?ctiid.261671signaturepermissions-required
• vuldb.comSubmit #316036 | Tenda FH1206 V1.2.0.8(8155) buffer overflowhttps://vuldb.com/?submit.316036third-party-advisory
• palm-vertebra-fe9.notion.sitehttps://palm-vertebra-fe9.notion.site/fromAddressNat_entrys-b04d5356e5f04e30b37cb9037b94e1b2exploit