How severe is CVE-2022-45853?

CVE-2022-45853 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-45853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45853?

CVE-2022-45853 primarily affects Zyxel Gs1900-8 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-45853?

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

When was CVE-2022-45853 published?

CVE-2022-45853 was published on 2023-05-30 and last updated on 2026-06-17.

CVE-2022-45853

CVE-2022-45853 is a medium-severity vulnerability in Zyxel Gs1900-8 Firmware with a CVSS 3.x base score of 6.7. 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-269.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Zyxel Gs1900-8 Firmware
Published: 2023-05-30
Last modified: 2026-06-17

Description

The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.

Frequently asked questions

What is CVE-2022-45853?: The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.
How severe is CVE-2022-45853?: CVE-2022-45853 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-45853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-45853?: CVE-2022-45853 primarily affects Zyxel Gs1900-8 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-45853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-45853 published?: CVE-2022-45853 was published on 2023-05-30 and last updated on 2026-06-17.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-privilege-escalation-vulnerability-in-gs1900-series-switches

Affected products (10)

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70\(aahh.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70\(aahi.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70\(aazi.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70\(aahj.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70\(aahl.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70\(aahk.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70\(abto.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70\(abtp.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70\(aahn.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70\(abtq.3\):*:*:*:*:*:*:*

More vulnerabilities in Zyxel Gs1900-8 Firmware

CVE-2019-15800 — Critical (CVSS 9.8): An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in…
CVE-2019-15803 — Critical (CVSS 9.1): An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Through an undocumented sequence…
CVE-2019-15799 — High (CVSS 8.8): An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. User accounts created through the…
CVE-2019-15804 — High (CVSS 7.5): An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. By sending a signal to the CLI…
CVE-2019-15801 — High (CVSS 7.5): An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware image contains…
CVE-2024-8881 — Medium (CVSS 6.8): A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version…

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