How severe is CVE-2022-36557?

CVE-2022-36557 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-36557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36557?

CVE-2022-36557 primarily affects Seiko-sol Skybridge Mb-a100 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-36557?

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

When was CVE-2022-36557 published?

CVE-2022-36557 was published on 2022-08-29 and last updated on 2026-06-17.

CVE-2022-36557

CVE-2022-36557 is a critical-severity vulnerability in Seiko-sol Skybridge Mb-a100 Firmware with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Seiko-sol Skybridge Mb-a100 Firmware
Published: 2022-08-29
Last modified: 2026-06-17

Description

Seiko SkyBridge MB-A100/A110 v4.2.0 and below was discovered to contain an arbitrary file upload vulnerability via the restore backup function. This vulnerability allows attackers to execute arbitrary code via a crafted html file.

Frequently asked questions

What is CVE-2022-36557?: Seiko SkyBridge MB-A100/A110 v4.2.0 and below was discovered to contain an arbitrary file upload vulnerability via the restore backup function. This vulnerability allows attackers to execute arbitrary code via a crafted html file.
How severe is CVE-2022-36557?: CVE-2022-36557 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-36557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36557?: CVE-2022-36557 primarily affects Seiko-sol Skybridge Mb-a100 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-36557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-36557 published?: CVE-2022-36557 was published on 2022-08-29 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:seiko-sol:skybridge_mb-a100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:seiko-sol:skybridge_mb-a110_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Seiko-sol Skybridge Mb-a100 Firmware

CVE-2022-36558 — Critical (CVSS 9.8): Seiko SkyBridge MB-A100/A110 v4.2.0 and below implements a hard-coded passcode for the root account. Attackers are able…
CVE-2022-36556 — Critical (CVSS 9.8): Seiko SkyBridge MB-A100/A110 v4.2.0 and below was discovered to contain a command injection vulnerability via the…
CVE-2023-25072 — High (CVSS 7.5): Use of weak credentials exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier, which may allow a remote…
CVE-2023-23906 — High (CVSS 7.5): Missing authentication for critical function exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier, which may…
CVE-2023-25070 — Medium (CVSS 6.5): Cleartext transmission of sensitive information exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier. If the…
CVE-2023-24586 — Medium (CVSS 6.5): Cleartext storage of sensitive information exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier, which may…

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