CVE-2021-29999
CVE-2021-29999 is a critical-severity vulnerability in Windriver Vxworks with a CVSS 3.x base score of 9.8. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Windriver Vxworks
- Published:
- Last modified:
Description
An issue was discovered in Wind River VxWorks through 6.8. There is a possible stack overflow in dhcp server.
Frequently asked questions
- What is CVE-2021-29999?
- An issue was discovered in Wind River VxWorks through 6.8. There is a possible stack overflow in dhcp server.
- How severe is CVE-2021-29999?
- CVE-2021-29999 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-29999 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-29999?
- CVE-2021-29999 affects Windriver Vxworks. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-29999?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-29999 published?
- CVE-2021-29999 was published on 2021-04-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
More vulnerabilities in Windriver Vxworks
- CVE-2013-0714 — Critical (CVSS 10.0): IPSSH (aka the SSH server) in Wind River VxWorks 6.5 through 6.9 allows remote attackers to execute arbitrary code or…
- CVE-2020-35198 — Critical (CVSS 9.8): An issue was discovered in Wind River VxWorks 7. The memory allocator has a possible integer overflow in calculating a…
- CVE-2021-29998 — Critical (CVSS 9.8): An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
- CVE-2016-20009 — Critical (CVSS 9.8): A DNS client stack-based buffer overflow in ipdnsc_decode_name() affects Wind River VxWorks 6.5 through 7. NOTE: This…
- CVE-2019-12262 — Critical (CVSS 9.8): Wind River VxWorks 6.6, 6.7, 6.8, 6.9 and 7 has Incorrect Access Control in the RARP client component. IPNET security…
- CVE-2019-12261 — Critical (CVSS 9.8): Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). This is an IPNET…
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