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CVE-2019-25679

RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH

RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Crun Realterm
Products
Realterm Realterm: Serial Terminal
CVE-2019-25569

RealTerm Serial Terminal 2.0.0.70 SEH Overflow Crash

RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that allows local attackers to crash the application by triggering a structured exception handler (SEH) chain corruption. Attackers can craft a malicious input string with 268 bytes of padding followed by SEH overwrite values and paste it into the Port field to cause denial of service.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Crun Realterm
Products
Realterm Realterm: Serial Terminal
CVE-2019-25570

RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field

RealTerm Serial Terminal 2.0.0.70 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Port field. Attackers can paste a buffer of 1000 characters into the Port input field and click the open button to trigger a crash.

CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Crun Realterm
Products
Realterm Realterm: Serial Terminal