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CVE Record

CVE-2021-32611: A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handl...

A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2021-32611 is a crash risk in Antisip eXosip2 through 5.2.0. Certain SIP 3xx redirect responses can trigger a NULL pointer dereference, likely causing denial of service in software that embeds this library. Public data provided does not show active exploitation. Exposure is most likely in SIP or VoIP applications that embed Antisip eXosip2 versions through 5.2.0 and process SIP 3xx redirect responses from untrusted or external sources. Treat this as a focused availability risk for SIP-dependent services. Prioritize systems where VoIP or SIP processing is business-critical or internet-facing, but do not escalate as known exploited based on the provided evidence. Mitigation focus: Inventory applications and services that embed Antisip eXosip2.; Identify whether deployed eXosip2 versions are through 5.2.0.; Review Antisip/eXosip2 guidance and the referenced commit for the official fix..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
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0ADP providers
1Source links

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
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Weakness

CWE details

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