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CVE-2019-12263 is a race-condition vulnerability in the Interpeak IPNET TCP/IP stack as used by Wind River VxWorks 6.9.4 and Vx7. The issue is described as TCP Urgent Pointer state confusion due to a race condition in the TCP component. According to the provided context, exploitation relies on concurrent access between the tNet0 network task and the receiving application, causing improper synchronization around TCP urgent-pointer handling and resulting in a buffer overflow condition in the TCP component. The flaw is part of the broader Ripple20/IPNET vulnerability set and affects supported VxWorks releases including 6.9.4.11, Vx7 SR540, and Vx7 SR610, as well as some older end-of-life versions; VxWorks 7 SR620 is reported as not affected.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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