How severe is CVE-2024-8748?

CVE-2024-8748 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-8748 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8748?

CVE-2024-8748 primarily affects Zyxel Lte3301-plus Firmware. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-8748?

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.

Does CVE-2024-8748 have an EU (EUVD) identifier?

Yes. CVE-2024-8748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49603.

When was CVE-2024-8748 published?

CVE-2024-8748 was published on 2024-12-03 and last updated on 2026-06-17.

CVE-2024-8748

CVE-2024-8748 is a high-severity vulnerability in Zyxel Lte3301-plus Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49603
Weakness: CWE-120
Affected product: Zyxel Lte3301-plus Firmware
Published: 2024-12-03
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABOM.8.4)C0 could allow an attacker to cause a temporary denial of service (DoS) condition against the web management interface by sending a crafted HTTP POST request to a vulnerable device.

Frequently asked questions

What is CVE-2024-8748?: A buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABOM.8.4)C0 could allow an attacker to cause a temporary denial of service (DoS) condition against the web management interface by sending a crafted HTTP POST request to a vulnerable device.
How severe is CVE-2024-8748?: CVE-2024-8748 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-8748 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8748?: CVE-2024-8748 primarily affects Zyxel Lte3301-plus Firmware. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-8748?: 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.
Does CVE-2024-8748 have an EU (EUVD) identifier?: Yes. CVE-2024-8748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49603.
When was CVE-2024-8748 published?: CVE-2024-8748 was published on 2024-12-03 and last updated on 2026-06-17.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-buffer-overflow-and-post-authentication-command-injection-vulnerabilities-in-some-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wifi-extenders-12-03-2024

Affected products (63)

cpe:2.3:o:zyxel:lte3301-plus_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:lte5388-m804_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:lte5398-m904_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:lte7480-m804_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:lte7490-m904_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nr7101_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nr7102_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nebula_nr5101_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nebula_nr7101_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nebula_lte3301-plus_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx3300-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx3300-t1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx3301-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx4510-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx4510-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx5401-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx5401-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ee6510-10_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex2210-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3300-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3300-t1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3301-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3500-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3501-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3510-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3510-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex3600-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5401-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5401-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5501-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5510-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5512-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5600-t1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5601-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5601-t1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex7501-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex7710-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:emg5523-t50b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:emg5723-t50k_firmware:*:*:*:*:*:*:*:*

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