How severe is CVE-2026-0711?

CVE-2026-0711 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-0711 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0711?

CVE-2026-0711 primarily affects Zyxel Nr5307 Firmware. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-0711?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-0711 have an EU (EUVD) identifier?

Yes. CVE-2026-0711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25968.

When was CVE-2026-0711 published?

CVE-2026-0711 was published on 2026-04-28 and last updated on 2026-07-25.

CVE-2026-0711

CVE-2026-0711 is a medium-severity vulnerability in Zyxel Nr5307 Firmware with a CVSS 3.x base score of 6.8. 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-78.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25968
Weakness: CWE-78
Affected product: Zyxel Nr5307 Firmware
Published: 2026-04-28
Last modified: 2026-07-25

Description

A post-authentication command injection vulnerability in the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions through 5.50(ABVY.7.1)C0 could allow an authenticated, adjacent attacker with administrator privileges to execute OS commands on an affected device.

Frequently asked questions

What is CVE-2026-0711?: A post-authentication command injection vulnerability in the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions through 5.50(ABVY.7.1)C0 could allow an authenticated, adjacent attacker with administrator privileges to execute OS commands on an affected device.
How severe is CVE-2026-0711?: CVE-2026-0711 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-0711 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0711?: CVE-2026-0711 primarily affects Zyxel Nr5307 Firmware. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-0711?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0711 have an EU (EUVD) identifier?: Yes. CVE-2026-0711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25968.
When was CVE-2026-0711 published?: CVE-2026-0711 was published on 2026-04-28 and last updated on 2026-07-25.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-04-28-2026

Affected products (36)

cpe:2.3:o:zyxel:nr5307_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nebula_fwa515_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:dx5401-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dx5401-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ee3301-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ee5301-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ee6510-10_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:emg5523-t50b_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:ex3600-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5401-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5401-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ex5512-t0_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:vmg3625-t50b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vmg8623-t50b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ax7501-b0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:ax7501-b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:pe3301-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:pe5301-01_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:px5302-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:px5301-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:we3300-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:wx3100-t0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:we4600-00_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:wx5600-t0_firmware:*:*:*:*:*:*:*:*

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