Is CVE-2026-2874 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2874, but active exploitation has not been confirmed.

Can CVE-2026-2874 be exploited remotely?

Yes. CVE-2026-2874 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2874?

CVE-2026-2874 has a CVSS score of 8.8 (HIGH) and an EPSS exploitation probability of 0.08%.

HOME VULNERABILITIESCVE-2026-2874

HIGHPOC

CVE-2026-2874

CWE-119Published: February 21, 2026· Updated: Feb 23, 2026

8.8

CVSS v3.1

EPSS:0.08%probability of exploitation in 30 daysPercentile:23.7th

Official Description

A flaw has been found in Tenda A21 1.0.0.0. Impacted is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set. Executing a manipulation of the argument ssid can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

NVD Source

Technical Analysis

CVE-2026-2874 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

A proof-of-concept (PoC) exploit exists for CVE-2026-2874. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

tenda2 products

a21 firmwarea21

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/QIU-DIE/cve-nneeww/issues/5

ADVISORYhttps://vuldb.com/?id.347111

ADVISORYhttps://vuldb.com/?submit.754636

News & Research Mentioning CVE-2026-2874

Milesight Cameras

CISA Alerts· Apr 23, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could crash the device being accessed or allow remote code execution. The following versions of Milesight Cameras are affected: MS-Cxx63-PD <=51.7.0.77-r12 (CVE-2026-28747, CVE-2026-27785, CVE-2026-32644, CVE-2026-32649, CVE-2026-20766) MS-Cxx64-xPD <=51.7.0.77-r12 (CVE-2026-28747, CVE-2026-27785, CVE-2026-32644, CVE-2026-32649, CVE-2026-20766) MS-Cxx73-xPD <=51.7.0.77-r12 (CVE-2026-28747, CVE-2026-27785, CVE-2026-32644, CVE-2026-32649, CVE-2026-20766) MS-Cxx75-xxPD <=51.7.0.77-r12 (CVE-2026-28747, CVE-2026-27785, CVE-2026-32644, CVE-2026-32649, CVE-2026-20766) MS-Cxx83-xPD <=51.7.0.77-r12 (CVE-2026-28747, CVE-2026-27785, CVE-2026-32644, CVE-2026-32649, CVE-2026-20766) MS-Cxx74-PA <=3 [xlite_meta score:79 src:CISA Alerts xlite_fp:1881e22b64819e1763bac1f61373780f8b1dd2672cfbb2863deb91bb2d17fc43]