Medium Authentication exploit reference

CVE-2025-11666 — Tenda RP3 Pro Firmware Update force_upgrade.sh hard-coded password

A flaw has been found in Tenda RP3 Pro up to 22.5.7.93. This impacts an unknown function of the file force_upgrade.sh of the component Firmware Update Handler. Executing manipulation of the argument current_force_upgrade_pwd can lead to use of hard-coded password. The attack can only be executed locally. The exploit has been published and may be used.

Published Oct 13, 2025 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.16%

ahead of 4% of scored CVEs · Oct 14, 2026

Affects

Tenda

RP3 Pro

CVSS base

6.7

Medium · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Tenda RP3 Pro).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Tenda	RP3 Pro	version 22.5.7.59version 22.5.7.70version 22.5.7.69version 22.5.7.68version 22.5.7.67version 22.5.7.66version 22.5.7.65version 22.5.7.64 and 86 more version 22.5.7.63version 22.5.7.62version 22.5.7.61version 22.5.7.60version 22.5.7.71version 22.5.7.58version 22.5.7.57version 22.5.7.56version 22.5.7.55version 22.5.7.54version 22.5.7.53version 22.5.7.52version 22.5.7.51version 22.5.7.50version 22.5.7.49version 22.5.7.48version 22.5.7.82version 22.5.7.93version 22.5.7.92version 22.5.7.91version 22.5.7.90version 22.5.7.89version 22.5.7.88version 22.5.7.87version 22.5.7.86version 22.5.7.85version 22.5.7.84version 22.5.7.83version 22.5.7.47version 22.5.7.81version 22.5.7.80version 22.5.7.79version 22.5.7.78version 22.5.7.77version 22.5.7.76version 22.5.7.75version 22.5.7.74version 22.5.7.73version 22.5.7.72version 22.5.7.12version 22.5.7.23version 22.5.7.22version 22.5.7.21version 22.5.7.20version 22.5.7.19version 22.5.7.18version 22.5.7.17version 22.5.7.16version 22.5.7.15version 22.5.7.14version 22.5.7.13version 22.5.7.24version 22.5.7.11version 22.5.7.10version 22.5.7.9version 22.5.7.8version 22.5.7.7version 22.5.7.6version 22.5.7.5version 22.5.7.4version 22.5.7.3version 22.5.7.2version 22.5.7.1version 22.5.7.35version 22.5.7.46version 22.5.7.45version 22.5.7.44version 22.5.7.43version 22.5.7.42version 22.5.7.41version 22.5.7.40version 22.5.7.39version 22.5.7.38version 22.5.7.37version 22.5.7.36version 22.5.7.0version 22.5.7.34version 22.5.7.33version 22.5.7.32version 22.5.7.31version 22.5.7.30version 22.5.7.29version 22.5.7.28version 22.5.7.27version 22.5.7.26version 22.5.7.25	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.4	CVSS 4.0	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP
7.0	CVSS 4.0	High	—	—	cna@vuldb.com via NIST National Vulnerability Database
6.7	CVSS 3.1	Medium	0.8	5.9	cna@vuldb.com via NIST National Vulnerability Database
6.7	CVSS 3.1	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
6.7	CVSS 3.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
6.5	CVSS 2.0	Medium	2.5	10.0	cna@vuldb.com via NIST National Vulnerability Database
6.5	CVSS 2.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-255 · Credentials Management Errors

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.16%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.

endpoint telemetry (EDR)authentication logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · tenda/rp3 pro
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 6.7
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Oct 13, 2025 · VulDB

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

5 on the record

github.com/IOTRes/IOT_Firmware_Update/blob/main/Tenda/RP3.md
exploit, patch, NIST National Vulnerability Database
vuldb.com/
third-party-advisory, NIST National Vulnerability Database
vuldb.com/
vdb-entry, technical-description, NIST National Vulnerability Database
vuldb.com/
signature, permissions-required, NIST National Vulnerability Database
www.tenda.com.cn/
product, NIST National Vulnerability Database

Elsewhere on this site

Tenda
every CVE for this vendor

Authentication
same class

CWE-255
other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-11666 is "Tenda RP3 Pro Firmware Update force_upgrade.sh hard-coded password", rated Medium. It affects RP3 Pro (Tenda); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.7 describes technical severity. EPSS 0.16% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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