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ExploitedIn CISA KEV

CVE-2023-33538

Exploitation confirmed. First attested on 2025-06-16 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2023-06-07
  • WeaknessCWE-77

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .

Timeline

dates in UTC
  1. 2023-06-0704:15CVE publishedNVD
  2. 2025-06-16Added to the CISA KEV catalogCISA KEV
  3. 2025-06-16Listed as exploited by GCVEGCVE
  4. 2025-06-16Exploitation first reportedCISA KEV
  5. 2025-12-1915:02SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-33538?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-33538?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Tp-link tl-wr740n firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Tp-link tl-wr841n firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Tp-link tl-wr940n firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2025-07-07

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
3 repositories, unverifiedexplxx/CVE-2023-33538mrowkoob/CVE-2023-33538-msfeev4n/tplink-osci
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-06-16
Patch Due Date
2025-07-07
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-06-07
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-49g9-8m2w-hfgg

Frequently asked questions

What is CVE-2023-33538?

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .

Is CVE-2023-33538 actively exploited?

Yes. CVE-2023-33538 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-07-07.

What is the CVSS score for CVE-2023-33538?

CVE-2023-33538 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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