How severe is CVE-2022-36587?

CVE-2022-36587 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-2022-36587 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36587?

CVE-2022-36587 affects Tenda G3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-36587?

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-2022-36587 published?

CVE-2022-36587 was published on 2022-09-07 and last updated on 2026-06-17.

CVE-2022-36587

CVE-2022-36587 is a critical-severity vulnerability in Tenda G3 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Tenda G3 Firmware
Published: 2022-09-07
Last modified: 2026-06-17

Description

In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by sprintf in function in the httpd binary.

Frequently asked questions

What is CVE-2022-36587?: In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by sprintf in function in the httpd binary.
How severe is CVE-2022-36587?: CVE-2022-36587 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-2022-36587 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36587?: CVE-2022-36587 affects Tenda G3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-36587?: 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-2022-36587 published?: CVE-2022-36587 was published on 2022-09-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:g3_firmware:15.11.0.6\(7663\):*:*:*:*:*:*:*

More vulnerabilities in Tenda G3 Firmware

CVE-2022-36586 — Critical (CVSS 9.8): In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by strcpy in function…
CVE-2022-36585 — Critical (CVSS 9.8): In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, in httpd binary, the addDhcpRule function has a buffer overflow caused…
CVE-2022-36584 — Critical (CVSS 9.8): In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, the getsinglepppuser function has a buffer overflow caused by sscanf.
CVE-2021-27707 — Critical (CVSS 9.8): Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute…
CVE-2021-27706 — Critical (CVSS 9.8): Buffer Overflow in Tenda G1 and G3 routers with firmware version V15.11.0.17(9502)_CN allows remote attackers to…
CVE-2021-27705 — Critical (CVSS 9.8): Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute…

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