How severe is CVE-2018-17534?

CVE-2018-17534 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17534?

CVE-2018-17534 primarily affects Teltonika Rut900 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-17534?

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

When was CVE-2018-17534 published?

CVE-2018-17534 was published on 2018-10-15 and last updated on 2026-06-17.

CVE-2018-17534

CVE-2018-17534 is a medium-severity vulnerability in Teltonika Rut900 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Teltonika Rut900 Firmware
Published: 2018-10-15
Last modified: 2026-06-17

Description

Teltonika RUT9XX routers with firmware before 00.04.233 provide a root terminal on a serial interface without proper access control. This allows attackers with physical access to execute arbitrary commands with root privileges.

Frequently asked questions

What is CVE-2018-17534?: Teltonika RUT9XX routers with firmware before 00.04.233 provide a root terminal on a serial interface without proper access control. This allows attackers with physical access to execute arbitrary commands with root privileges.
How severe is CVE-2018-17534?: CVE-2018-17534 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17534?: CVE-2018-17534 primarily affects Teltonika Rut900 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-17534?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-17534 published?: CVE-2018-17534 was published on 2018-10-15 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:teltonika:rut900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:teltonika:rut950_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:teltonika:rut955_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Teltonika Rut900 Firmware

CVE-2018-17532 — Critical (CVSS 9.8): Teltonika RUT9XX routers with firmware before 00.04.233 are prone to multiple unauthenticated OS command injection…
CVE-2017-8116 — Critical (CVSS 9.8): The management interface for the Teltonika RUT9XX routers (aka LuCI) with firmware 00.03.265 and earlier allows remote…
CVE-2018-17533 — Medium (CVSS 6.1): Teltonika RUT9XX routers with firmware before 00.05.01.1 are prone to cross-site scripting vulnerabilities in…

All CVEs affecting Teltonika Rut900 Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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