CVE-2023-31856

CRITICALNVD 9.89.8—Elevated

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 96.0%
KEV: Not listed

Published

May 16, 2023

Last Modified

January 23, 2025

References (2)

cve@mitrehttps://github.com/xiangbulala/CVE/blob/main/totlink.md
af854a3a-2127-422b-91ae-364da2661108https://github.com/xiangbulala/CVE/blob/main/totlink.md

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-77Command Injection

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:46 UTCepss_batch
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2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
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2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-25 01:02 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-31856?

CVE-2023-31856 is a critical vulnerability published on May 16, 2023. 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.

When was CVE-2023-31856 disclosed?

CVE-2023-31856 was first published in the National Vulnerability Database on May 16, 2023, with the most recent update on January 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-31856 actively exploited?

CVE-2023-31856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-31856?

CVE-2023-31856 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-31856?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31856, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-31856

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-31856?

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Published

Last Modified

References (2)

Frequently asked(5)

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