CVE-2021-29998
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in...
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
- Record
CVE-2021-29998- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
- Record
CVE-2021-29998- Updated
- 2026-11-02
EUVDEUVD-2021-16457 No score
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
- Record
EUVD-2021-16457- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hpxq-hffh-gxv5
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in...
An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
- Record
GHSA-hpxq-hffh-gxv5- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
- windriver vxworks
- siemens ruggedcom win subscriber station firmware
- siemens scalance x200-4 p irt firmware
- siemens scalance x201-3p irt firmware
- siemens scalance x201-3p irt pro firmware
- siemens scalance x202-2 irt firmware
- siemens scalance x202-2p irt firmware
- siemens scalance x202-2p irt pro firmware
- siemens scalance x204-2 firmware
- siemens scalance x204-2fm firmware
- siemens scalance x204-2ld firmware
- siemens scalance x204-2ld ts firmware
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- siemens scalance x204-2ts firmware
- siemens scalance x204 irt firmware
- siemens scalance x204 irt pro firmware
- siemens scalance x206-1 firmware
- siemens scalance x206-1ld firmware
- siemens scalance x208 firmware
- siemens scalance x208 pro firmware
- siemens scalance x212-2 firmware
- siemens scalance x212-2ld firmware
- siemens scalance x216 firmware
- siemens scalance x224 firmware
- siemens scalance x300 firmware
- siemens scalance x408 firmware
- siemens scalance xf201-3p irt firmware
- siemens scalance xf202-2p irt firmware
- siemens scalance xf204-2 firmware
- siemens scalance xf204-2ba irt firmware
- siemens scalance xf204 firmware
- siemens scalance xf204 irt firmware
- siemens scalance xf206-1 firmware
- siemens scalance xf208 firmware
- siemens simatic rf 181 eip firmware
- siemens simatic rf 182c firmware
- siemens sinamics perfect harmony gh180 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29998 is a critical vulnerability (CVSS 9.8) in Windriver Vxworks, published April 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.21%, the 91st percentile. No source names a fixed version.