CVE-2021-32611
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0...
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
CVE-2021-32611- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-476
- Updated
- 2026-11-02
CVE List No score
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
CVE-2021-32611- Updated
- 2026-11-02
EUVDEUVD-2021-19449 No score
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
EUVD-2021-19449- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f98p-q24c-xw97 No score
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0...
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
GHSA-f98p-q24c-xw97- Weakness
- CWE-476
- Updated
- 2026-11-02
OSV
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
CVE-2021-32611- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-08
OSVUBUNTU-CVE-2021-32611
A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.
- Record
UBUNTU-CVE-2021-32611- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libexosip2Ubuntu:16.04:LTS |
All versions, plus listed versions 4.1.0-2 |
None known |
libexosip2Ubuntu:18.04:LTS |
All versions, plus listed versions 4.1.0-2.1ubuntu14.1.0-2.2~build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-32611 is a high vulnerability (CVSS 7.5) in Antisip Exosip2, published May 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. No source names a fixed version.