How severe is CVE-2023-30257?

CVE-2023-30257 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-30257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30257?

CVE-2023-30257 affects Fiio M6 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-30257?

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-2023-30257 published?

CVE-2023-30257 was published on 2023-05-08 and last updated on 2026-06-17.

CVE-2023-30257

CVE-2023-30257 is a high-severity vulnerability in Fiio M6 Firmware with a CVSS 3.x base score of 7.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Fiio M6 Firmware
Published: 2023-05-08
Last modified: 2026-06-17

Description

A buffer overflow in the component /proc/ftxxxx-debug of FiiO M6 Build Number v1.0.4 allows attackers to escalate privileges to root.

Frequently asked questions

What is CVE-2023-30257?: A buffer overflow in the component /proc/ftxxxx-debug of FiiO M6 Build Number v1.0.4 allows attackers to escalate privileges to root.
How severe is CVE-2023-30257?: CVE-2023-30257 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-30257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30257?: CVE-2023-30257 affects Fiio M6 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-30257?: 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-2023-30257 published?: CVE-2023-30257 was published on 2023-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:fiio:m6_firmware:1.0.4:*:*:*:*:*:*:*

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →