CRITICAL
Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet
Published Apr 11, 2016
9.8
CRITICALCVSS 3.0
EPSS 30.52%
Description
Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.
Affected products
No data.
Configuration 1
- 8.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
30.52% 0.30518
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.30518
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 30.52% (0.30518) | 98.19th | v5 (v2026.06.15) |
| Sep 22, 2026 | 30.52% (0.30518) | 98.16th | v5 (v2026.06.15) |
| Sep 21, 2026 | 26.99% (0.26987) | 98.00th | v5 (v2026.06.15) |
| Sep 6, 2026 | 30.52% (0.30518) | 98.11th | v5 (v2026.06.15) |
| Sep 5, 2026 | 26.99% (0.26987) | 97.95th | v5 (v2026.06.15) |
| Aug 30, 2026 | 30.52% (0.30518) | 98.10th | v5 (v2026.06.15) |
| Aug 28, 2026 | 26.99% (0.26987) | 97.94th | v5 (v2026.06.15) |
| Aug 24, 2026 | 30.52% (0.30518) | 98.09th | v5 (v2026.06.15) |
| Aug 23, 2026 | 26.99% (0.26987) | 97.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 30.52% (0.30518) | 97.99th | v5 (v2026.06.15) |
| Jun 8, 2026 | 20.97% (0.20973) | 95.76th | v4 (v2025.03.14) |
| May 16, 2026 | 22.50% (0.22500) | 95.91th | v4 (v2025.03.14) |
| Sep 3, 2025 | 25.30% (0.25299) | 96.03th | v4 (v2025.03.14) |
| Jul 14, 2025 | 23.95% (0.23954) | 95.77th | v4 (v2025.03.14) |
| Jul 9, 2025 | 26.75% (0.26748) | 96.11th | v4 (v2025.03.14) |
| Apr 8, 2025 | 24.86% (0.24859) | 95.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 26.51% (0.26512) | 95.89th | v4 (v2025.03.14) |
| Mar 29, 2025 | 37.75% (0.37753) | 95.75th | v4 (v2025.03.14) |
| Mar 17, 2025 | 26.51% (0.26512) | 95.90th | v4 (v2025.03.14) |
| Dec 12, 2024 | 25.33% (0.25329) | 96.87th | v3 (v2023.03.01) |
| Sep 22, 2023 | 25.33% (0.25329) | 96.10th | v3 (v2023.03.01) |
| Jun 4, 2023 | 23.33% (0.23331) | 95.84th | v3 (v2023.03.01) |
| Mar 7, 2023 | 26.15% (0.26150) | 95.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 19.83% (0.19826) | 96.41th | v2 (v2022.01.01) |
| Apr 1, 2022 | 19.83% (0.19826) | 96.07th | v2 (v2022.01.01) |
| Feb 4, 2022 | 19.83% (0.19826) | 93.91th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://packetstormsecurity.com/files/136477/Kamailio-4.3.4-Heap-Overflow.html x_refsource_MISCExploit
- http://www.debian.org/security/2016/dsa-3535 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3537 vendor-advisoryx_refsource_DEBIAN
- http://www.kamailio.org/pub/kamailio/4.3.5/ChangeLog x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/537926/100/0/threaded mailing-listx_refsource_BUGTRAQ
- https://census-labs.com/news/2016/03/30/kamailio-seas-heap-overflow/ x_refsource_MISCExploit
- https://github.com/kamailio/kamailio/commit/f50c9c853e7809810099c970780c30b0765b0643 x_refsource_CONFIRMExploit
- https://www.exploit-db.com/exploits/39638/ exploitx_refsource_EXPLOIT-DB
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/136477/Kamailio-4.3.4-Heap-Overflow.html | x_refsource_MISCExploit | |
| http://www.debian.org/security/2016/dsa-3535 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.debian.org/security/2016/dsa-3537 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.kamailio.org/pub/kamailio/4.3.5/ChangeLog | x_refsource_CONFIRM | |
| http://www.securityfocus.com/archive/1/537926/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| https://census-labs.com/news/2016/03/30/kamailio-seas-heap-overflow/ | x_refsource_MISCExploit | |
| https://github.com/kamailio/kamailio/commit/f50c9c853e7809810099c970780c30b0765b0643 | x_refsource_CONFIRMExploit | |
| https://www.exploit-db.com/exploits/39638/ | exploitx_refsource_EXPLOIT-DB |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 11, 2016
Updated Aug 5, 2024
Reserved Feb 15, 2016
Link CVE-2016-2385
CISA Vulnrichment
Updated n/a