How severe is CVE-2020-27553?

CVE-2020-27553 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 high, integrity none, and availability none.

Is CVE-2020-27553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27553?

CVE-2020-27553 affects Basetech Ge-131 Bt-1837836 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27553?

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-2020-27553 published?

CVE-2020-27553 was published on 2020-11-17 and last updated on 2026-06-17.

CVE-2020-27553

CVE-2020-27553 is a high-severity vulnerability in Basetech Ge-131 Bt-1837836 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Basetech Ge-131 Bt-1837836 Firmware
Published: 2020-11-17
Last modified: 2026-06-17

Description

In BASETech GE-131 BT-1837836 firmware 20180921, the web-server on the system is configured with the option “DocumentRoot /etc“. This allows an attacker with network access to the web-server to download any files from the “/etc” folder without authentication. No path traversal sequences are needed to exploit this vulnerability.

Frequently asked questions

What is CVE-2020-27553?: In BASETech GE-131 BT-1837836 firmware 20180921, the web-server on the system is configured with the option “DocumentRoot /etc“. This allows an attacker with network access to the web-server to download any files from the “/etc” folder without authentication. No path traversal sequences are needed to exploit this vulnerability.
How severe is CVE-2020-27553?: CVE-2020-27553 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 high, integrity none, and availability none.
Is CVE-2020-27553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27553?: CVE-2020-27553 affects Basetech Ge-131 Bt-1837836 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27553?: 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-2020-27553 published?: CVE-2020-27553 was published on 2020-11-17 and last updated on 2026-06-17.

References

https://infosec.rm-it.de/2020/11/04/basetech-ip-camera-analysis/#vulns

Affected products (1)

cpe:2.3:o:basetech:ge-131_bt-1837836_firmware:20180921:*:*:*:*:*:*:*

More vulnerabilities in Basetech Ge-131 Bt-1837836 Firmware

CVE-2020-27555 — Critical (CVSS 9.8): Use of default credentials for the telnet server in BASETech GE-131 BT-1837836 firmware 20180921 allows remote…
CVE-2020-27554 — High (CVSS 7.5): Cleartext Transmission of Sensitive Information vulnerability in BASETech GE-131 BT-1837836 firmware 20180921 exists…
CVE-2020-27558 — Medium (CVSS 6.5): Use of an undocumented user in BASETech GE-131 BT-1837836 firmware 20180921 allows remote attackers to view the video…
CVE-2020-27557 — Medium (CVSS 5.5): Unprotected Storage of Credentials vulnerability in BASETech GE-131 BT-1837836 firmware 20180921 allows local users to…
CVE-2020-27556 — Medium (CVSS 5.3): A predictable device ID in BASETech GE-131 BT-1837836 firmware 20180921 allows unauthenticated remote attackers to…

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