What is CVE-2021-44428?

CVE-2021-44428 is a high-severity vulnerability in Ipuptime Pinkie, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-11-29.

How severe is CVE-2021-44428?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-44428 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Ipuptime Pinkie

CVE-2021-44428

Pinkie 2.15 allows remote attackers to cause a denial of service (daemon crash) via a TFTP read (RRQ) request, aka opcode 1.

Vulnerability class: Buffer Overflow

Published 2021-11-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.030 (87.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.030 · change: +0.001

Affected products

Ipuptime Pinkie — versions 2.15

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

www.exploit-db.com/exploits/50535 (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-44428?: CVE-2021-44428 is a high-severity vulnerability in Ipuptime Pinkie, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-11-29.
How severe is CVE-2021-44428?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-44428 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.