CVE-2021-20515
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by...
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.
- Record
CVE-2021-20515- CVSS 3.0
- 6.7 Medium
CVSS:3.0/C:H/S:U/PR:H/A:H/AV:L/UI:N/I:H/AC:L/RL:O/RC:C/E:U - Updated
- 2026-11-02
EUVDEUVD-2021-7933
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.
- Record
EUVD-2021-7933- CVSS 3.0
- 6.7 Medium
CVSS:3.0/C:H/S:U/PR:H/A:H/AV:L/UI:N/I:H/AC:L/RL:O/RC:C/E:U - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hvxp-j45w-m4cw No score
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by...
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.
- Record
GHSA-hvxp-j45w-m4cw- Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.
- Record
CVE-2021-20515- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 3.0
- 6.7 Medium
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20515 is a medium vulnerability (CVSS 6.7) in Ibm Informix Dynamic Server, published April 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. No source names a fixed version.