How severe is CVE-2021-25328?

CVE-2021-25328 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-2021-25328 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25328?

CVE-2021-25328 affects Skyworthdigital Rn510 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25328?

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-2021-25328 published?

CVE-2021-25328 was published on 2021-04-09 and last updated on 2026-06-17.

CVE-2021-25328

CVE-2021-25328 is a high-severity vulnerability in Skyworthdigital Rn510 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Skyworthdigital Rn510 Firmware
Published: 2021-04-09
Last modified: 2026-06-17

Description

Skyworth Digital Technology RN510 V.3.1.0.4 RN510 V.3.1.0.4 contains a buffer overflow vulnerability in /cgi-bin/app-staticIP.asp. An authenticated attacker can send a specially crafted request to endpoint which can lead to a denial of service (DoS) or possible code execution on the device.

Frequently asked questions

What is CVE-2021-25328?: Skyworth Digital Technology RN510 V.3.1.0.4 RN510 V.3.1.0.4 contains a buffer overflow vulnerability in /cgi-bin/app-staticIP.asp. An authenticated attacker can send a specially crafted request to endpoint which can lead to a denial of service (DoS) or possible code execution on the device.
How severe is CVE-2021-25328?: CVE-2021-25328 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-2021-25328 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25328?: CVE-2021-25328 affects Skyworthdigital Rn510 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25328?: 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-2021-25328 published?: CVE-2021-25328 was published on 2021-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:skyworthdigital:rn510_firmware:3.1.0.4:*:*:*:*:*:*:*

More vulnerabilities in Skyworthdigital Rn510 Firmware

CVE-2021-25327 — Medium (CVSS 6.5): Skyworth Digital Technology RN510 V.3.1.0.4 contains a cross-site request forgery (CSRF) vulnerability in…
CVE-2021-25326 — Medium (CVSS 5.4): Skyworth Digital Technology RN510 V.3.1.0.4 is affected by an incorrect access control vulnerability…

All CVEs affecting Skyworthdigital Rn510 Firmware →

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 →