CVE-2026-51221: A buffer overflow in the Get_Attribute_List function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service (DoS) via supplying a crafted Common Packet
A buffer overflow in the Get_Attribute_List function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service (DoS) via supplying a crafted Common Packet Format (CPF) packet.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-51221
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-512210.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-51221 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for A buffer overflow
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- lowCVE-2026-56372: ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the magnify opera…nvd · 2026-07-11
- mediumCVE-2026-31267: Mercusys MW302R MW302R(EU)_V1_1.4.10 Build 231023 is vulnerable to Buffer Overflow in the admi…nvd · 2026-07-09
- highCVE-2026-51605: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
- highCVE-2026-51604: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
- highCVE-2026-51603: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
- highCVE-2026-51602: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
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