How severe is CVE-2017-16565?

CVE-2017-16565 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-16565 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16565?

CVE-2017-16565 affects Grandstream Ht802 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16565?

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-2017-16565 published?

CVE-2017-16565 was published on 2017-11-06 and last updated on 2026-06-17.

CVE-2017-16565

CVE-2017-16565 is a high-severity vulnerability in Grandstream Ht802 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Grandstream Ht802 Firmware
Published: 2017-11-06
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) in /cgi-bin/login on Vonage (Grandstream) HT802 devices allows attackers to authenticate a user via the login screen using the default password of 123 and submit arbitrary requests.

Frequently asked questions

What is CVE-2017-16565?: Cross-Site Request Forgery (CSRF) in /cgi-bin/login on Vonage (Grandstream) HT802 devices allows attackers to authenticate a user via the login screen using the default password of 123 and submit arbitrary requests.
How severe is CVE-2017-16565?: CVE-2017-16565 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-16565 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16565?: CVE-2017-16565 affects Grandstream Ht802 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16565?: 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-2017-16565 published?: CVE-2017-16565 was published on 2017-11-06 and last updated on 2026-06-17.

References

https://distributedcompute.com/2017/11/04/vonage-ht802-multiple-vulnerabilities/

Affected products (1)

cpe:2.3:o:grandstream:ht802_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Grandstream Ht802 Firmware

CVE-2020-5763 — High (CVSS 8.8): Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. An authenticated…
CVE-2017-16563 — High (CVSS 8.0): Cross-Site Request Forgery (CSRF) in the Basic Settings screen on Vonage (Grandstream) HT802 devices allows attackers…
CVE-2020-5760 — High (CVSS 7.8): Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to an OS command injection vulnerability.…
CVE-2020-5762 — High (CVSS 7.5): Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to a denial of service attack against the…
CVE-2020-5761 — High (CVSS 7.5): Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to CPU exhaustion due to an infinite loop in…
CVE-2017-16564 — Medium (CVSS 5.4): Stored Cross-site scripting (XSS) vulnerability in /cgi-bin/config2 on Vonage (Grandstream) HT802 devices allows remote…

All CVEs affecting Grandstream Ht802 Firmware →

Other CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities

CVE-2025-32642 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in appsbd Vite Coupon vite-coupon allows Remote Code Inclusion.This…
CVE-2025-23922 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in Harsh iSpring Embedder embed-ispring allows Upload a Web Shell to a…
CVE-2017-5145 — Critical (CVSS 10.0): An issue was discovered in Carlo Gavazzi VMU-C EM prior to firmware Version A11_U05, and VMU-C PV prior to firmware…
CVE-2019-25729 — Critical (CVSS 9.8): PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute…
CVE-2025-48340 — Critical (CVSS 9.8): Cross-Site Request Forgery (CSRF) vulnerability in Danny Vink User Profile Meta Manager user-profile-meta allows…
CVE-2025-2907 — Critical (CVSS 9.8): The Order Delivery Date WordPress plugin before 12.3.1 does not have authorization and CSRF checks when importing…

Browse all CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities →