CVE-2016-20040
CVE-2016-20040 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- CVSS v4: 8.6
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2016-10835
- Weakness: CWE-22
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2016-20040?
- 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.
- How severe is CVE-2016-20040?
- CVE-2016-20040 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2016-20040 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2016-20040?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2016-20040 have an EU (EUVD) identifier?
- Yes. CVE-2016-20040 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10835.
- When was CVE-2016-20040 published?
- CVE-2016-20040 was published on 2026-03-28 and last updated on 2026-06-17.
References
- http://lpg.ticalc.org/prj_tiemu/
- https://www.exploit-db.com/exploits/39692
- https://www.vulncheck.com/advisories/tiemu-nogdb-dfsg-3-buffer-overflow-via-rom-parameter
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