How severe is CVE-2020-8949?

CVE-2020-8949 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-2020-8949 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8949?

CVE-2020-8949 primarily affects Gocloud S2a Wl Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8949?

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-2020-8949 published?

CVE-2020-8949 was published on 2020-02-12 and last updated on 2026-06-17.

CVE-2020-8949

CVE-2020-8949 is a high-severity vulnerability in Gocloud S2a Wl Firmware with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Gocloud S2a Wl Firmware
Published: 2020-02-12
Last modified: 2026-06-17

Description

Gocloud S2A_WL 4.2.7.16471, S2A 4.2.7.17278, S2A 4.3.0.15815, S2A 4.3.0.17193, S3A K2P MTK 4.2.7.16528, S3A 4.3.0.16572, and ISP3000 4.3.0.17190 devices allows remote attackers to execute arbitrary OS commands via shell metacharacters in a ping operation, as demonstrated by the cgi-bin/webui/admin/tools/app_ping/diag_ping/; substring.

Frequently asked questions

What is CVE-2020-8949?: Gocloud S2A_WL 4.2.7.16471, S2A 4.2.7.17278, S2A 4.3.0.15815, S2A 4.3.0.17193, S3A K2P MTK 4.2.7.16528, S3A 4.3.0.16572, and ISP3000 4.3.0.17190 devices allows remote attackers to execute arbitrary OS commands via shell metacharacters in a ping operation, as demonstrated by the cgi-bin/webui/admin/tools/app_ping/diag_ping/; substring.
How severe is CVE-2020-8949?: CVE-2020-8949 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-2020-8949 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8949?: CVE-2020-8949 primarily affects Gocloud S2a Wl Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8949?: 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-2020-8949 published?: CVE-2020-8949 was published on 2020-02-12 and last updated on 2026-06-17.

References

https://sku11army.blogspot.com/2020/02/gocloud-rce-in-gocloud-routers.html

Affected products (7)

cpe:2.3:o:gocloud:s2a_wl_firmware:4.2.7.16471:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:s2a_firmware:4.2.7.17278:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:s2a_firmware:4.3.0.15815:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:s2a_firmware:4.3.0.17193:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:s3a_k2p_mtk_firmware:4.2.7.16528:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:s3a_firmware:4.3.0.16572:*:*:*:*:*:*:*
cpe:2.3:o:gocloud:isp3000_firmware:4.3.0.17190:*:*:*:*:*:*:*

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