Buffer overflow in NETGEAR R6700
CVE-2020-15635
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.
Vulnerability class: Buffer Overflow
EPSS: 0.026 (84.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Netgear R6700 — versions v3, 1.0.4.84_10.0.58
- Netgear R6700_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
- zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-15635?
- CVE-2020-15635 is a high-severity vulnerability in NETGEAR R6700, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2020-08-20.
- How severe is CVE-2020-15635?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-15635 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.