How severe is CVE-2025-55613?

CVE-2025-55613 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-2025-55613 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55613?

CVE-2025-55613 affects Tenda O3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55613?

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.

Does CVE-2025-55613 have an EU (EUVD) identifier?

Yes. CVE-2025-55613 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25615.

When was CVE-2025-55613 published?

CVE-2025-55613 was published on 2025-08-22 and last updated on 2026-06-17.

CVE-2025-55613

CVE-2025-55613 is a critical-severity vulnerability in Tenda O3 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25615
Weakness: CWE-120
Affected product: Tenda O3 Firmware
Published: 2025-08-22
Last modified: 2026-06-17

Description

Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter.

Frequently asked questions

What is CVE-2025-55613?: Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter.
How severe is CVE-2025-55613?: CVE-2025-55613 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-2025-55613 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55613?: CVE-2025-55613 affects Tenda O3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55613?: 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.
Does CVE-2025-55613 have an EU (EUVD) identifier?: Yes. CVE-2025-55613 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25615.
When was CVE-2025-55613 published?: CVE-2025-55613 was published on 2025-08-22 and last updated on 2026-06-17.

References

https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_58/58.md

Affected products (1)

cpe:2.3:o:tenda:o3_firmware:1.0.0.12\(3880\):*:*:*:*:*:*:*

More vulnerabilities in Tenda O3 Firmware

CVE-2024-36604 — Critical (CVSS 9.8): Tenda O3V2 v1.0.0.12(3880) was discovered to contain a Blind Command Injection via stpEn parameter in the SetStp…
CVE-2025-7423 — High (CVSS 8.8): A vulnerability classified as critical was found in Tenda O3V2 1.0.0.12(3880). Affected by this vulnerability is the…
CVE-2025-7422 — High (CVSS 8.8): A vulnerability classified as critical has been found in Tenda O3V2 1.0.0.12(3880). Affected is the function…
CVE-2025-7421 — High (CVSS 8.8): A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been rated as critical. This issue affects the function…
CVE-2025-7420 — High (CVSS 8.8): A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been declared as critical. This vulnerability affects…
CVE-2025-7419 — High (CVSS 8.8): A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been classified as critical. This affects the function…

All CVEs affecting Tenda O3 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 →