CVE-2019-12259

CVE-2019-12259 is a high-severity vulnerability in Windriver Vxworks with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-476.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 5.0
• EPSS exploit prediction: 16% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-476
• Affected product: Windriver Vxworks
• Published: 2019-08-09
• Last modified: 2026-06-17

Description

Wind River VxWorks 6.6, 6.7, 6.8, 6.9 and vx7 has an array index error in the IGMPv3 client component. There is an IPNET security vulnerability: DoS via NULL dereference in IGMP parsing.

Frequently asked questions

What is CVE-2019-12259?

Wind River VxWorks 6.6, 6.7, 6.8, 6.9 and vx7 has an array index error in the IGMPv3 client component. There is an IPNET security vulnerability: DoS via NULL dereference in IGMP parsing.

How severe is CVE-2019-12259?

CVE-2019-12259 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-12259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12259?

CVE-2019-12259 primarily affects Windriver Vxworks. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-12259?

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.

When was CVE-2019-12259 published?

CVE-2019-12259 was published on 2019-08-09 and last updated on 2026-06-17.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009
• https://security.netapp.com/advisory/ntap-20190802-0001/
• https://support.f5.com/csp/article/K41190253
• https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12259
• https://support2.windriver.com/index.php?page=security-notices
• https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/

Affected products (17)

• cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
• cpe:2.3:o:windriver:vxworks:7.0:-:*:*:*:*:*:*
• cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
• cpe:2.3:o:sonicwall:sonicos:6.2.7.0:*:*:*:*:*:*:*
• cpe:2.3:o:sonicwall:sonicos:6.2.7.1:*:*:*:*:*:*:*
• cpe:2.3:o:sonicwall:sonicos:6.2.7.7:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:siprotec_5_firmware:*:*:*:*:*:*:*:cp200
• cpe:2.3:o:siemens:siprotec_5_firmware:*:*:*:*:*:*:*:cp300
• cpe:2.3:o:siemens:siprotec_5_firmware:*:*:*:*:*:*:*:cp100
• cpe:2.3:o:siemens:ruggedcom_win7000_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:ruggedcom_win7200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:ruggedcom_win7025_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:ruggedcom_win7018_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:9410_power_meter_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:9810_power_meter_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*
• cpe:2.3:o:belden:garrettcom_magnum_dx940e_firmware:*:*:*:*:*:*:*:*

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-2021-29999 — Critical (CVSS 9.8): An issue was discovered in Wind River VxWorks through 6.8. There is a possible stack overflow in dhcp server.
• 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…

All CVEs affecting Windriver Vxworks →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

• CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
• CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
• CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
• CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
• CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
• CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →