CVE-2020-15635
highpriority · track · 36EPSS 0.026 · 86 %ileEUUSEPSS · scored 2026-10-27
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the acsd service, which listens on TCP port 5916 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-9853.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- http://www.nsfocus.net/vulndb/48293cnnvd
- https://kb.netgear.com/000062127/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-R6700v3-PSV-2020-0202cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-15635cnnvd
- https://www.zerodayinitiative.com/advisories/ZDI-20-936/cnnvd
- https://kb.netgear.com/000062127/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-R6700v3-PSV-2020-0202enisa_euvd
- https://www.zerodayinitiative.com/advisories/ZDI-20-936/enisa_euvd
- https://kb.netgear.com/000062127/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-R6700v3-PSV-2020-0202Vendor Advisorynvd
- https://www.zerodayinitiative.com/advisories/ZDI-20-936/Third Party AdvisoryVDB Entrynvd
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