CVE-2017-20226

Mapscrn 2.0.3 Stack-Based Buffer Overflow

CVSS 8.6 HIGHEPSS 0.1%CWE-787

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 8.6EPSS 0.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

28 Mar 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

Mapscrn 2.0.3 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized input buffer. Attackers can craft a malicious buffer with junk data, return address, NOP instructions, and shellcode to overflow the stack and achieve code execution or denial of service.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

msk · Mapscrn

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/42144unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://ccross.msk.su https://www.exploit-db.com/exploits/42144 https://www.vulncheck.com/advisories/mapscrn-stack-based-buffer-overflow