ID

VAR-202604-4026


CVE

CVE-2026-5363


TITLE

TP-LINK Technologies of Archer C7  Cryptographic Strength Vulnerability in Firmware

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sources: JVNDB: JVNDB-2026-017093

DESCRIPTION

Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation.  The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login.   An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration.   This issue affects Archer C7: through Build 20220715. RSA-1024 It is encrypted using and sent to the router. Archer C7 of 2022 Year 7 Moon 15 This will affect the daily build.All information handled by the software may be leaked to the outside. All information handled by the software may be rewritten. Furthermore, the software may stop working completely. Furthermore, attacks that exploit this vulnerability will not affect other software

Trust: 1.62

sources: NVD: CVE-2026-5363 // JVNDB: JVNDB-2026-017093

AFFECTED PRODUCTS

vendor:tp linkmodel:archer c7scope:eqversion: -

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vendor:tp linkmodel:archer c7scope:eqversion:archer c7 firmware 1.2.1

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sources: JVNDB: JVNDB-2026-017093 // NVD: CVE-2026-5363

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2026-5363
value: HIGH

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f23511db-6c3e-4e32-a477-6aa17d310630: CVE-2026-5363
value: MEDIUM

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NVD: CVE-2026-5363
value: HIGH

Trust: 0.8

nvd@nist.gov: CVE-2026-5363
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: CVE-2026-5363
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: JVNDB: JVNDB-2026-017093 // NVD: CVE-2026-5363 // NVD: CVE-2026-5363

PROBLEMTYPE DATA

problemtype:CWE-326

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problemtype:Inappropriate cryptographic strength (CWE-326) [ others ]

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sources: JVNDB: JVNDB-2026-017093 // NVD: CVE-2026-5363

EXTERNAL IDS

db:NVDid:CVE-2026-5363

Trust: 2.6

db:JVNDBid:JVNDB-2026-017093

Trust: 0.8

sources: JVNDB: JVNDB-2026-017093 // NVD: CVE-2026-5363

REFERENCES

url:https://www.tp-link.com/us/support/faq/3562/

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url:https://nvd.nist.gov/vuln/detail/cve-2026-5363

Trust: 0.8

sources: JVNDB: JVNDB-2026-017093 // NVD: CVE-2026-5363

SOURCES

db:JVNDBid:JVNDB-2026-017093
db:NVDid:CVE-2026-5363

LAST UPDATE DATE

2026-06-19T23:37:44.952000+00:00


SOURCES UPDATE DATE

db:JVNDBid:JVNDB-2026-017093date:2026-05-28T05:39:00
db:NVDid:CVE-2026-5363date:2026-05-06T14:08:58.067

SOURCES RELEASE DATE

db:JVNDBid:JVNDB-2026-017093date:2026-05-28T00:00:00
db:NVDid:CVE-2026-5363date:2026-04-16T00:16:29.547