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Priority reviewCritical

CVE-2022-25064

tl-wr840n firmware, tl-wr840n

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a remote code execution (RCE) vulnerability via the function oal_wan6_setIpAddr.

CVSS
9.8
EPSS
36.2%
98.3% percentile
CISA KEV
Not listed
Published
2022.02.26
PRIORITY ASSESSMENT

Priority review

FIRST EPSS indicates an elevated probability of exploitation.

Known exploitationNot established by KEV
Exploit probability36.2%
Technical severityCVSS 9.8

Vulnerability overview

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a remote code execution (RCE) vulnerability via the function oal_wan6_setIpAddr.

Affected product and versions

Product
tl-wr840n firmware, tl-wr840n
Affected versions
6.20 180709
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that tl-wr840n firmware, tl-wr840n and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-78
CVE-2022-25064 — tl-wr840n firmware, tl-wr840n | SECUFOCUS NOW