CVE-2016-20040

TiEmu 3.03-nogdb+dfsg-3 Buffer Overflow via ROM Parameter

8.6 High

TiEmu 3.03-nogdb+dfsg-3 contains a buffer overflow vulnerability in the ROM parameter handling that allows local attackers to crash the application or execute arbitrary code. Attackers can supply an oversized ROM parameter to the tiemu command-line interface to overflow the stack buffer and overwrite the instruction pointer with malicious addresses.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.17%Up 0.2 points since Mar 28, 2026

What each source reports

CVE List Score used 8.6

TiEmu 3.03-nogdb+dfsg-3 Buffer Overflow via ROM Parameter

Record: CVE-2016-20040
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-22
Updated: 2026-11-02

EUVDEUVD-2016-10835 8.6

Record: EUVD-2016-10835
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-253h-f8wh-gcxr 8.6

TiEmu 3.03-nogdb+dfsg-3 contains a buffer overflow vulnerability in the ROM parameter handling...

Record: GHSA-253h-f8wh-gcxr
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-22
Updated: 2026-11-02

NVD 8.6

Record: CVE-2016-20040
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-22
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-20040 8.6

Record: DEBIAN-CVE-2016-20040
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-20040 8.6

Record: UBUNTU-CVE-2016-20040
CVSS 4.0: 8.6 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

ticalc texas instrument emulator

Affected packages

Affected packages
Package	Affected	Fixed
`tiemu` Debian:12	All versions, plus listed versions 3.04~git20220826.cda2db4+dfsg-2	None known
`tiemu` Ubuntu:16.04:LTS	All versions, plus listed versions 3.03-nogdb+dfsg-3	None known
`tiemu` Ubuntu:18.04:LTS	All versions, plus listed versions 3.04~git20110801-nogdb+dfsg-1	None known
`tiemu` Ubuntu:20.04:LTS	All versions, plus listed versions 3.04~git20110801-nogdb+dfsg1-2	None known
`tiemu` Ubuntu:22.04:LTS	All versions, plus listed versions 3.04~git20110801-nogdb+dfsg1-23.04~git20110801-nogdb+dfsg1-2build1	None known
`tiemu` Ubuntu:24.04:LTS	All versions, plus listed versions 3.04~git20220826.cda2db4+dfsg-23.04~git20220826.cda2db4+dfsg-2build13.04~git20220826.cda2db4+dfsg-2build2	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-20040 is a high vulnerability (CVSS 8.6) in Ticalc Texas Instrument Emulator, published March 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.