How severe is CVE-2023-39617?

CVE-2023-39617 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-2023-39617 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39617?

CVE-2023-39617 primarily affects Totolink X5000r Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-39617?

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-2023-39617 published?

CVE-2023-39617 was published on 2023-08-21 and last updated on 2026-06-17.

CVE-2023-39617

CVE-2023-39617 is a critical-severity vulnerability in Totolink X5000r 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Totolink X5000r Firmware
Published: 2023-08-21
Last modified: 2026-06-17

Description

TOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313 were discovered to contain a remote code execution (RCE) vulnerability via the lang parameter in the setLanguageCfg function.

Frequently asked questions

What is CVE-2023-39617?: TOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313 were discovered to contain a remote code execution (RCE) vulnerability via the lang parameter in the setLanguageCfg function.
How severe is CVE-2023-39617?: CVE-2023-39617 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-2023-39617 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39617?: CVE-2023-39617 primarily affects Totolink X5000r Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-39617?: 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-2023-39617 published?: CVE-2023-39617 was published on 2023-08-21 and last updated on 2026-06-17.

References

https://sedate-class-393.notion.site/TOTOlink-ee7eb0d4cd5d43e9983296200371eff1?pvs=4

Affected products (2)

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2089_b20211224:*:*:*:*:*:*:*
cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2350_b20230313:*:*:*:*:*:*:*

More vulnerabilities in Totolink X5000r Firmware

CVE-2025-70327 — Critical (CVSS 9.8): TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of…
CVE-2025-13184 — Critical (CVSS 9.8): Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank…
CVE-2024-32353 — Critical (CVSS 9.8): TOTOLINK X5000R V9.1.0cu.2350_B20230313 was discovered to contain a command injection vulnerability via the 'port'…
CVE-2024-28639 — Critical (CVSS 9.8): Buffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R V9.1.0u.6115-B20201022, allow remote…
CVE-2023-45984 — Critical (CVSS 9.8): TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack…
CVE-2023-36950 — Critical (CVSS 9.8): TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack…

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