Buffer overflow in Zavio B8220
CVE-2023-39435
Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with firmware version M2.1.6.05 are vulnerable to stack-based overflows. During the process of updating certain settings sent from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Zavio B8220
- Zavio B8220 Firmware — versions m2.1.6.05
- Zavio B8520
- Zavio B8520 Firmware — versions m2.1.6.05
- Zavio Cb3211
- Zavio Cb3211 Firmware — versions m2.1.6.05
- Zavio Cb3212
- Zavio Cb3212 Firmware — versions m2.1.6.05
- Zavio Cb5220
- Zavio Cb5220 Firmware — versions m2.1.6.05
Weakness classification (CWE)
References
- www.cisa.gov/news-events/ics-advisories/icsa-23-304-03 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-39435?
- CVE-2023-39435 is a high-severity vulnerability in Zavio B8220, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2023-11-08.
- How severe is CVE-2023-39435?
- High severity. CVSS v3 base score is 8.8 out of 10.