How severe is CVE-2020-17407?

CVE-2020-17407 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-2020-17407 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17407?

CVE-2020-17407 affects Microhardcorp Bullet-lte Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-17407?

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-2020-17407 published?

CVE-2020-17407 was published on 2020-10-13 and last updated on 2026-06-17.

CVE-2020-17407

CVE-2020-17407 is a critical-severity vulnerability in Microhardcorp Bullet-lte 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Microhardcorp Bullet-lte Firmware
Published: 2020-10-13
Last modified: 2026-06-17

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microhard Bullet-LTE prior to v1.2.0-r1112. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of authentication headers. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-10596.

Frequently asked questions

What is CVE-2020-17407?: This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microhard Bullet-LTE prior to v1.2.0-r1112. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of authentication headers. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-10596.
How severe is CVE-2020-17407?: CVE-2020-17407 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-2020-17407 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-17407?: CVE-2020-17407 affects Microhardcorp Bullet-lte Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-17407?: 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-2020-17407 published?: CVE-2020-17407 was published on 2020-10-13 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-20-1206/

Affected products (1)

cpe:2.3:o:microhardcorp:bullet-lte_firmware:*:*:*:*:*:*:*:*

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