How severe is CVE-2023-4249?

CVE-2023-4249 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4249?

CVE-2023-4249 primarily affects Zavio Cf7500 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4249?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-4249 published?

CVE-2023-4249 was published on 2023-11-08 and last updated on 2026-06-17.

CVE-2023-4249

CVE-2023-4249 is a high-severity vulnerability in Zavio Cf7500 Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Zavio Cf7500 Firmware
Published: 2023-11-08
Last modified: 2026-06-17

Description

Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with firmware version M2.1.6.05 has a command injection vulnerability in their implementation of their binaries and handling of network requests.

Frequently asked questions

What is CVE-2023-4249?: Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with firmware version M2.1.6.05 has a command injection vulnerability in their implementation of their binaries and handling of network requests.
How severe is CVE-2023-4249?: CVE-2023-4249 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4249?: CVE-2023-4249 primarily affects Zavio Cf7500 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4249?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4249 published?: CVE-2023-4249 was published on 2023-11-08 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-304-03

Affected products (11)

cpe:2.3:o:zavio:cf7500_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cf7300_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cf7201_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cf7501_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cb3211_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cb3212_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cb5220_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cb6231_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:b8520_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:b8220_firmware:m2.1.6.05:*:*:*:*:*:*:*
cpe:2.3:o:zavio:cd321_firmware:m2.1.6.05:*:*:*:*:*:*:*

More vulnerabilities in Zavio Cf7500 Firmware

CVE-2023-45225 — Critical (CVSS 9.8): Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with…
CVE-2023-43755 — Critical (CVSS 9.8): Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with…
CVE-2023-3959 — Critical (CVSS 9.8): Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with…
CVE-2023-39435 — High (CVSS 8.8): Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with…

All CVEs affecting Zavio Cf7500 Firmware →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →