Buffer overflow in NETGEAR Cbr40
CVE-2022-27646
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.014 (72.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kb.netgear.com/000064721/Security-Advisory-for-Multiple-Vulnerabilities-on-Mult… (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-22-523/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-27646?
- CVE-2022-27646 is a high-severity vulnerability in NETGEAR Cbr40, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2023-03-29.
- How severe is CVE-2022-27646?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2022-27646 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.