CVE-2026-4621
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to...
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
- Record
CVE-2026-4621- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N - Weakness
- CWE-912
- Updated
- 2026-11-02
EUVDEUVD-2026-16589
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
- Record
EUVD-2026-16589- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v782-gww8-28q2
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to...
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
- Record
GHSA-v782-gww8-28q2- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-912
- Updated
- 2026-11-02
NVD
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
- Record
CVE-2026-4621- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-912
- Updated
- 2026-11-02
Affected products
- nec aterm w1200ex-ms firmware
- nec aterm wf1200cr firmware
- nec aterm wg1200cr firmware
- nec aterm wg1200hp2 firmware
- nec aterm wg1200hp3 firmware
- nec aterm wg1200hp4 firmware
- nec aterm wg1200hs2 firmware
- nec aterm wg1200hs3 firmware
- nec aterm wg1200hs4 firmware
- nec aterm wg1800hp3 firmware
- nec aterm wg1800hp4 firmware
- nec aterm wg1900hp2 firmware
Show 34 moreShow less
- nec aterm wg1900hp firmware
- nec aterm wg2600hm4 firmware
- nec aterm wg2600hp4 firmware
- nec aterm wg2600hs2 firmware
- nec aterm wg2600hs firmware
- nec aterm wx1500hp firmware
- nec aterm wx3000hp2 firmware
- nec aterm wx3000hp firmware
- nec aterm wx3600hp firmware
- nec platforms, ltd. aterm gb1200pe
- nec platforms, ltd. aterm gx1200hp
- nec platforms, ltd. aterm gx1200hs4
- nec platforms, ltd. aterm w1200ex(-ms)
- nec platforms, ltd. aterm wf1200cr
- nec platforms, ltd. aterm wg1200cr
- nec platforms, ltd. aterm wg1200dm4
- nec platforms, ltd. aterm wg1200hp2
- nec platforms, ltd. aterm wg1200hp3
- nec platforms, ltd. aterm wg1200hp4
- nec platforms, ltd. aterm wg1200hs2
- nec platforms, ltd. aterm wg1200hs3
- nec platforms, ltd. aterm wg1200hs4
- nec platforms, ltd. aterm wg1800hp3
- nec platforms, ltd. aterm wg1800hp4
- nec platforms, ltd. aterm wg1900hp
- nec platforms, ltd. aterm wg1900hp2
- nec platforms, ltd. aterm wg2600hm4
- nec platforms, ltd. aterm wg2600hp4
- nec platforms, ltd. aterm wg2600hs
- nec platforms, ltd. aterm wg2600hs2
- nec platforms, ltd. aterm wx1500hp
- nec platforms, ltd. aterm wx3000hp
- nec platforms, ltd. aterm wx3000hp2
- nec platforms, ltd. aterm wx3600hp
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-4621 is a medium vulnerability (CVSS 6.3) in Nec Aterm W1200ex-ms Firmware, published March 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.