CVE-2026-106804
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The...
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
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
CVE List Score used
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
- Record
CVE-2026-106804- 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 - Weakness
- CWE-121, CWE-120, CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2026-115345
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
- Record
EUVD-2026-115345- 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
- 2026-11-03
GitHub AdvisoriesGHSA-wm7p-xjpr-gf9g
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The...
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
- Record
GHSA-wm7p-xjpr-gf9g- 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 - Weakness
- CWE-20
- Updated
- 2026-11-03
NVD
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
- Record
CVE-2026-106804- 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 - Weakness
- CWE-20, CWE-120, CWE-121
- Updated
- 2026-11-03
OSVUBUNTU-CVE-2026-106804
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP Via header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP REGISTER request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
- Record
UBUNTU-CVE-2026-106804- 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
- 2026-11-05
Affected packages
| Package | Affected | Fixed |
|---|---|---|
kamailioUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 4.3.1-2ubuntu14.3.4-1.1ubuntu14.3.4-1.1ubuntu24.3.4-1.1ubuntu2.14.3.4-1.1ubuntu2.1+esm14.3.4-1.1ubuntu2.1+esm2 |
None known |
kamailioUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 4.4.2-3ubuntu55.0.4-1ubuntu15.1.1-1ubuntu15.1.1-1ubuntu45.1.2-1ubuntu15.1.2-1ubuntu25.1.2-1ubuntu2+esm15.1.2-1ubuntu2+esm2 |
None known |
kamailioUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 5.2.3-1build35.2.3-1build45.3.0-25.3.1-15.3.2-1build1 Show 4 moreShow less5.3.2-1build25.3.2-1build35.3.2-1ubuntu0.1~esm15.3.2-1ubuntu0.1~esm2 |
None known |
kamailioUbuntu:22.04:LTS |
All versions, plus listed versions 5.4.4-1build15.4.4-1ubuntu15.4.4-1ubuntu25.5.4-1 |
None known |
kamailioUbuntu:24.04:LTS |
All versions, plus listed versions 5.7.0-1build15.7.2-1build15.7.3-15.7.4-15.7.4-1build15.7.4-1build55.7.4-1build7 |
None known |
kamailioUbuntu:26.10 |
All versions, plus listed versions 6.0.5-1ubuntu16.1.2-1ubuntu26.1.2-1ubuntu36.1.2-1ubuntu4 |
None known |
kamailioUbuntu:26.04:LTS |
All versions, plus listed versions 6.0.2-26.0.5-16.0.5-1build16.0.5-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| aliases | EUVD, GitHub Advisories, NVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-106804 is a high vulnerability (CVSS 7.5) in kamailio, published November 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.