CVE-2025-7851 | Unauthorized root access via debug functionality

An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways.

Published: 2025-10-21 Last update: 2025-10-24 Assigner: f23511db-6c3e-4e32-a477-6aa17d310630 Source: f23511db-6c3e-4e32-a477-6aa17d310630
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-7851 is rated Moderate Risk (40.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-7851

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-31 0.04% 0.05% +0.02%
2 2026-03-19 0.05% 0.04% -0.01%
3 2025-10-27 — 0.05% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-7851

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.7 4.0 HIGH
CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Click to expand
Attack vector (AV:A)
Attacker has to be on an adjacent/local network segment.
Attack complexity (AC:H)
Exploitation depends on constrained or hard-to-reproduce conditions.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:H)
High privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H)
High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:L)
Limited confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:L)
Limited integrity impact on subsequent systems.
Subsequent system availability impact (SA:H)
High availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — f23511db-6c3e-4e32-a477-6aa17d310630
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2025-7851

Affected software / configurations for CVE-2025-7851

Vendor Product Version Raw CPE
tp-link fr307-m2_firmware < 1.2.5 cpe:2.3:o:tp-link:fr307-m2_firmware:*:*:*:*:*:*:*:*
tp-link fr307-m2_firmware 1.2.5 cpe:2.3:o:tp-link:fr307-m2_firmware:1.2.5:-:*:*:*:*:*:*
tp-link fr205_firmware < 1.0.3 cpe:2.3:o:tp-link:fr205_firmware:*:*:*:*:*:*:*:*
tp-link fr205_firmware 1.0.3 cpe:2.3:o:tp-link:fr205_firmware:1.0.3:-:*:*:*:*:*:*
tp-link fr365_firmware < 1.1.10 cpe:2.3:o:tp-link:fr365_firmware:*:*:*:*:*:*:*:*
tp-link fr365_firmware 1.1.10 cpe:2.3:o:tp-link:fr365_firmware:1.1.10:-:*:*:*:*:*:*
tp-link g611_firmware < 1.2.2 cpe:2.3:o:tp-link:g611_firmware:*:*:*:*:*:*:*:*
tp-link g611_firmware 1.2.2 cpe:2.3:o:tp-link:g611_firmware:1.2.2:-:*:*:*:*:*:*
tp-link g36_firmware < 1.1.4 cpe:2.3:o:tp-link:g36_firmware:*:*:*:*:*:*:*:*
tp-link g36_firmware 1.1.4 cpe:2.3:o:tp-link:g36_firmware:1.1.4:-:*:*:*:*:*:*
tp-link er7212pc_firmware < 2.1.3 cpe:2.3:o:tp-link:er7212pc_firmware:*:*:*:*:*:*:*:*
tp-link er7212pc_firmware 2.1.3 cpe:2.3:o:tp-link:er7212pc_firmware:2.1.3:-:*:*:*:*:*:*
tp-link er706w-4g_firmware < 1.2.1 cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:*
tp-link er706w-4g_firmware 1.2.1 cpe:2.3:o:tp-link:er706w-4g_firmware:1.2.1:-:*:*:*:*:*:*
tp-link er706w_firmware < 1.2.1 cpe:2.3:o:tp-link:er706w_firmware:*:*:*:*:*:*:*:*
tp-link er706w_firmware 1.2.1 cpe:2.3:o:tp-link:er706w_firmware:1.2.1:-:*:*:*:*:*:*
tp-link er605_firmware < 2.3.1 cpe:2.3:o:tp-link:er605_firmware:*:*:*:*:*:*:*:*
tp-link er605_firmware 2.3.1 cpe:2.3:o:tp-link:er605_firmware:2.3.1:-:*:*:*:*:*:*
tp-link er7206_firmware < 2.2.2 cpe:2.3:o:tp-link:er7206_firmware:*:*:*:*:*:*:*:*
tp-link er7206_firmware 2.2.2 cpe:2.3:o:tp-link:er7206_firmware:2.2.2:-:*:*:*:*:*:*
tp-link er707-m2_firmware < 1.3.1 cpe:2.3:o:tp-link:er707-m2_firmware:*:*:*:*:*:*:*:*
tp-link er707-m2_firmware 1.3.1 cpe:2.3:o:tp-link:er707-m2_firmware:1.3.1:-:*:*:*:*:*:*
tp-link er7412-m2_firmware < 1.1.0 cpe:2.3:o:tp-link:er7412-m2_firmware:*:*:*:*:*:*:*:*
tp-link er7412-m2_firmware 1.1.0 cpe:2.3:o:tp-link:er7412-m2_firmware:1.1.0:-:*:*:*:*:*:*
tp-link er8411_firmware < 1.3.3 cpe:2.3:o:tp-link:er8411_firmware:*:*:*:*:*:*:*:*
tp-link er8411_firmware 1.3.3 cpe:2.3:o:tp-link:er8411_firmware:1.3.3:-:*:*:*:*:*:*

References for CVE-2025-7851

cvelogic Threat Intelligence