Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker.

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• netgear d7800 firmwarebefore 1.0.1.34
• netgear dm200 firmwarebefore 1.0.0.50
• netgear ex2700 firmwarebefore 1.0.1.32
• netgear ex6100 firmwarebefore 1.0.1.70
• netgear ex6150 firmwarebefore 1.0.1.70
• netgear ex6200 firmwarebefore 1.0.1.62
• netgear ex6400 firmwarebefore 1.0.1.78
• netgear ex7300 firmwarebefore 1.0.1.62
• netgear ex8000 firmwarebefore 1.0.0.114
• netgear r6100 firmwarebefore 1.0.1.22
• netgear r7500 firmwarebefore 1.0.0.122
• netgear r7500 firmwarebefore 1.0.3.26
• netgear r7800 firmwarebefore 1.0.2.40
• netgear r8900 firmwarebefore 1.0.3.10
• netgear r9000 firmwarebefore 1.0.3.10
• netgear wn2000rpt firmwarebefore 1.0.1.26
• netgear wn3000rp firmwarebefore 1.0.0.56
• netgear wn3000rp firmwarebefore 1.0.2.66
• netgear wn3100rp firmwarebefore 1.0.0.56
• netgear wndr4300 firmwarebefore 1.0.2.98

Other highest-scoring records for the same primary product.

• CVE-2021-45618Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  40Plan
• CVE-2021-45608Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow by an unauthenticated attac
  40Plan
• CVE-2021-45658Certain NETGEAR devices are affected by server-side injection.
  39Monitor
• CVE-2021-38529Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  39Monitor
• CVE-2018-21161Certain NETGEAR devices are affected by incorrect configuration of security settings.
  39Monitor
• CVE-2020-26909Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  36Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1char buf[256];2memcpy(buf, pkt->data, pkt->len);

1char buf[256];2if (pkt->len > sizeof(buf)) {3  return -EINVAL;4}5memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.