CVE-2019-12264 [High] | Security Vulnerability in Vxworks

CVE-2019-12264 is rated High Risk (66.4/100): CVSS High severity, with high exploitation likelihood (EPSS 8.31%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +8.23% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.08%	8.31%	+8.23%
2	2025-11-02	0.23%	0.08%	-0.15%
3	2025-10-08	—	0.23%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.08%

8.31%

+8.23%

2025-11-02

0.23%

0.08%

-0.15%

2025-10-08

—

0.23%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.1	3.1	HIGH	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	4.2	[email protected]
4.8	2.0	MEDIUM	`AV:A/AC:L/Au:N/C:N/I:P/A:P` Click to expand Access vector (AV:A) Requires access to an adjacent network segment. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	6.5	4.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.1

3.1

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

4.2

[email protected]

4.8

2.0

MEDIUM

AV:A/AC:L/Au:N/C:N/I:P/A:P Click to expand

Access vector (AV:A): Requires access to an adjacent network segment.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

6.5

4.9

[email protected]

Affected software / configurations for CVE-2019-12264

Vendor	Product	Version	Raw CPE
windriver	vxworks	6.6	cpe:2.3:o:windriver:vxworks:6.6:::::::*
windriver	vxworks	6.7	cpe:2.3:o:windriver:vxworks:6.7:::::::*
windriver	vxworks	6.8	cpe:2.3:o:windriver:vxworks:6.8:::::::*
windriver	vxworks	6.9.3	cpe:2.3:o:windriver:vxworks:6.9.3:::::::*
windriver	vxworks	6.9.4	cpe:2.3:o:windriver:vxworks:6.9.4:::::::*
windriver	vxworks	7.0	cpe:2.3:o:windriver:vxworks:7.0:::::::*
belden	hirschmann_hios	<= 07.0.07	cpe:2.3:o:belden:hirschmann_hios::::::::
belden	hirschmann_hios	<= 07.5.01	cpe:2.3:o:belden:hirschmann_hios::::::::
belden	hirschmann_hios	<= 07.2.04	cpe:2.3:o:belden:hirschmann_hios::::::::
belden	hirschmann_hios	<= 05.3.06	cpe:2.3:o:belden:hirschmann_hios::::::::
belden	garrettcom_magnum_dx940e_firmware	<= 1.0.1_y7	cpe:2.3:o:belden:garrettcom_magnum_dx940e_firmware::::::::
siemens	ruggedcom_win7000_firmware	< bs5.2.461.17	cpe:2.3:o:siemens:ruggedcom_win7000_firmware::::::::
siemens	ruggedcom_win7018_firmware	< bs5.2.461.17	cpe:2.3:o:siemens:ruggedcom_win7018_firmware::::::::
siemens	ruggedcom_win7025_firmware	< bs5.2.461.17	cpe:2.3:o:siemens:ruggedcom_win7025_firmware::::::::
siemens	ruggedcom_win7200_firmware	< bs5.2.461.17	cpe:2.3:o:siemens:ruggedcom_win7200_firmware::::::::

References for CVE-2019-12264

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf	Third Party Advisory
https://support.f5.com/csp/article/K41190253	Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03960en_us	Third Party Advisory
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12264	Vendor Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/	Vendor Advisory

URL

CVE-2019-12264

Exploit prediction scoring system (EPSS) score for CVE-2019-12264

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12264

Weakness enumeration for CVE-2019-12264

Affected software / configurations for CVE-2019-12264

References for CVE-2019-12264