CVE-2026-5363: Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password

Q: How do I fix CVE-2026-5363?

archer c7 firmware: upgrade to 1.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-5363 being exploited?

CVE-2026-5363 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5363 affect?

CVE-2026-5363 affects archer c7 firmware. Severity is high (CVSS 8.8). 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 d

Routine

HIGH 8.8UPGRADE

CVE-2026-5363 is a high-severity flaw (CVSS 8.8) affecting archer c7 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 administrat

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-326
Published	2026-04-16
Last modified	2026-10-26

Publisher (CNA): TPLink · Vendor: tp-link

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-16 00:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

tp-link archer c7 firmware UPGRADE

Affected: < 1.2.1

Fixed in: 1.2.1

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5363?

archer c7 firmware: upgrade to 1.2.1. Exact commands for each OS are on this page.

Is CVE-2026-5363 being exploited?

CVE-2026-5363 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5363 affect?

CVE-2026-5363 affects archer c7 firmware. Severity is high (CVSS 8.8). 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 d

How urgent is CVE-2026-5363?

Priority 31/100. High severity

Software pages

TP-Link vulnerabilities

References

← Back to latest CVEs