How severe is CVE-2023-27063?

CVE-2023-27063 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-2023-27063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27063?

CVE-2023-27063 affects Tenda W15e Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27063?

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-2023-27063 published?

CVE-2023-27063 was published on 2023-03-13 and last updated on 2026-06-17.

CVE-2023-27063

CVE-2023-27063 is a critical-severity vulnerability in Tenda W15e 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% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Tenda W15e Firmware
Published: 2023-03-13
Last modified: 2026-06-17

Description

Tenda V15V1.0 V15.11.0.14(1521_3190_1058) was discovered to contain a buffer overflow vulnerability via the DNSDomainName parameter in the formModifyDnsForward function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Frequently asked questions

What is CVE-2023-27063?: Tenda V15V1.0 V15.11.0.14(1521_3190_1058) was discovered to contain a buffer overflow vulnerability via the DNSDomainName parameter in the formModifyDnsForward function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
How severe is CVE-2023-27063?: CVE-2023-27063 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-2023-27063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27063?: CVE-2023-27063 affects Tenda W15e Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27063?: 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-2023-27063 published?: CVE-2023-27063 was published on 2023-03-13 and last updated on 2026-06-17.

References

https://github.com/didi-zhiyuan/vuln/blob/main/iot/Tenda/W15EV1/formModifyDnsForward.md

Affected products (1)

cpe:2.3:o:tenda:w15e_firmware:15.11.0.14:*:*:*:*:*:*:*

More vulnerabilities in Tenda W15e Firmware

CVE-2023-27061 — Critical (CVSS 9.8): Tenda V15V1.0 V15.11.0.14(1521_3190_1058) was discovered to contain a buffer overflow vulnerability via the…
CVE-2022-42058 — Critical (CVSS 9.8): Tenda AC1200 Router Model W15Ev2 V15.11.0.10(1576) was discovered to contain a stack overflow via the…
CVE-2024-4127 — High (CVSS 8.8): A vulnerability was found in Tenda W15E 15.11.0.14. It has been classified as critical. Affected is the function…
CVE-2024-4126 — High (CVSS 8.8): A vulnerability was found in Tenda W15E 15.11.0.14 and classified as critical. This issue affects the function…
CVE-2024-4125 — High (CVSS 8.8): A vulnerability has been found in Tenda W15E 15.11.0.14 and classified as critical. This vulnerability affects the…
CVE-2024-4124 — High (CVSS 8.8): A vulnerability, which was classified as critical, was found in Tenda W15E 15.11.0.14. This affects the function…

All CVEs affecting Tenda W15e 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 →