CVE-2016-2385Kamailio Memory Corruption
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…
Published Apr 11, 2016 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2016-2385, DSA-3535-1, UBUNTU-CVE-2016-2385
Key Facts
Patch immediately- CVE-2016-2385 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Kamailio, Debian Linux.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 31% probability of exploitation in the next 30 days.
- Fixed versions are available, including Kamailio 4.2.0-2+deb8u1, Kamailio 4.3.4-1.1ubuntu2.1+esm2, Kamailio 4.3.4-2.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
31%
Higher than 98.2% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
54/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
4
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
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
14 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| KamailioKamailio | See advisory | 4.3.4 |
| Debian LinuxDebian | 8.0 | n/a |
Patched Releases
Kamailio
4.2.0-2+deb8u1, 4.3.4-1.1ubuntu2.1+esm2, 4.3.4-2, 4.3.4
Timeline
Publicly disclosed
Apr 11, 2016
Last updated
Aug 4, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisorysecurity-tracker.debian.org · CVE-2016-2385
- advisoryubuntu.com · CVE-2016-2385
- advisorycve.org · CVERecord
- advisoryubuntu.com · USN-7416-1
- advisoryopenwall.com · 4
FAQ
Common Questions.
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: Kamailio; Debian Linux versions 8.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Kamailio 4.2.0-2+deb8u1, Kamailio 4.3.4-1.1ubuntu2.1+esm2, Kamailio 4.3.4-2.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2016-2385 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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