CVE-2023-31856
CVE-2023-31856 is a critical-severity vulnerability in Totolink Cp300+ 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: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Totolink Cp300+ Firmware
- Published:
- Last modified:
Description
A command injection vulnerability in the hostTime parameter in the function NTPSyncWithHostof TOTOLINK CP300+ V5.2cu.7594_B20200910 allows attackers to execute arbitrary commands via a crafted http packet.
Frequently asked questions
- What is CVE-2023-31856?
- A command injection vulnerability in the hostTime parameter in the function NTPSyncWithHostof TOTOLINK CP300+ V5.2cu.7594_B20200910 allows attackers to execute arbitrary commands via a crafted http packet.
- How severe is CVE-2023-31856?
- CVE-2023-31856 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-2023-31856 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-31856?
- CVE-2023-31856 affects Totolink Cp300+ Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-31856?
- 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-2023-31856 published?
- CVE-2023-31856 was published on 2023-05-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:totolink:cp300\+_firmware:5.2cu.7594_b20200910:*:*:*:*:*:*:*
More vulnerabilities in Totolink Cp300+ Firmware
- CVE-2023-36955 — Critical (CVSS 9.8): TOTOLINK CP300+ <=V5.2cu.7594_B20200910 was discovered to contain a stack overflow via the File parameter in the…
- CVE-2023-36954 — Critical (CVSS 9.8): TOTOLINK CP300+ V5.2cu.7594_B20200910 and before is vulnerable to command injection.
- CVE-2023-36953 — Critical (CVSS 9.8): TOTOLINK CP300+ V5.2cu.7594_B20200910 and before is vulnerable to command injection.
- CVE-2023-36952 — Critical (CVSS 9.8): TOTOLINK CP300+ V5.2cu.7594_B20200910 was discovered to contain a stack overflow via the pingIp parameter in the…
- CVE-2023-34669 — High (CVSS 7.5): TOTOLINK CP300+ V5.2cu.7594 contains a Denial of Service vulnerability in function RebootSystem of the file…
All CVEs affecting Totolink Cp300+ Firmware →
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