CVE-2018-8879

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Published Nov 21, 2019 CVSS 3.1 · 9.8 Critical EPSS 16.7% KEV · Not listed

Description

Stack-based buffer overflow in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to execute arbitrary code by providing a long string to the blocking.asp page via a GET or POST request. Vulnerable parameters are flag, mac, and cat_id.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:asus:rt-ac66u_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:asus:rt-ac66u:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 16.7% (16.707% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://pagedout.institute/download/PagedOut_001_beta1.pdf
https://www.asus.com/Networking/RTAC66U/HelpDesk_BIOS

History

Jul 15, 2025 1:45 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.3026}`	epss `{'score': 0.32014}`

Subscriptions

Asus Rt-ac66u Rt-ac66u Firmware

Weaknesses

CWE-787

Sources

CVE record Updated: Aug 5, 2024, 7:10 AM

Status: PUBLISHED
Assigner: mitre
Published: Nov 21, 2019, 3:26 PM
Updated: Aug 5, 2024, 7:10 AM
Reserved: Mar 20, 2018, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 2:05 AM

Status: Modified
Published: Nov 21, 2019, 4:15 PM
Modified: Jun 17, 2026, 2:05 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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