Skip to main content

Freeswitch CVE-2015-7392

HIGH
Buffer Overflow (CWE-119)
2015-10-05 cve@mitre.org
7.5
CVSS 2.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 4.09%.

Exploit ScenarioDerived

A remote attacker could corrupt memory to execute arbitrary code or crash the application by sending crafted requests to the affected application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 4.1% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

Heap-based buffer overflow in the parse_string function in libs/esl/src/esl_json.c in FreeSWITCH before 1.4.23 and 1.6.x before 1.6.2 allows remote attackers to execute arbitrary code via a trailing. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Heap-based buffer overflow in the parse_string function in libs/esl/src/esl_json.c in FreeSWITCH before 1.4.23 and 1.6.x before 1.6.2 allows remote attackers to execute arbitrary code via a trailing \u in a json string to cJSON_Parse. Affected products include: Freeswitch. Version information: before 1.4.23.

Know when Freeswitch gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

Heap-based buffer overflow in the parse_string function in libs/esl/src/esl_json.c in FreeSWITCH before 1.4.23 and 1.6.x before 1.6.2 allows remote attackers to execute arbitrary code via a trailing \u in a json string to cJSON_Parse.

Threat Intelligence Overview

EPSS Score
4.1%
Top 11% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 4.1%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

62
Low Medium High Critical
KEV: 0
EPSS: +4
CVSS: +38
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*
cpe:2.3:a:freeswitch:freeswitch:1.6.0:*:*:*:*:*:*:*
CVE-2019-19492 CRITICAL POC
9.8 Dec 02

FreeSWITCH 1.6.10 through 1.10.1 has a default password in event_socket.conf.xml. Rated critical severity (CVSS 9.8), th

CVE-2021-41158 HIGH POC
7.5 Oct 26

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2021-41145 HIGH POC
7.5 Oct 25

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2021-41105 HIGH POC
7.5 Oct 25

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2021-37624 HIGH POC
7.5 Oct 25

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2021-36513 HIGH POC
7.5 Oct 18

An issue was discovered in function sofia_handle_sip_i_notify in sofia.c in SignalWire freeswitch before 1.10.6, may all

CVE-2018-19911 HIGH POC
7.5 Dec 06

FreeSWITCH through 1.8.2, when mod_xml_rpc is enabled, allows remote attackers to execute arbitrary commands via the api

CVE-2013-2238 MEDIUM POC
6.8 Sep 30

Multiple buffer overflows in the switch_perform_substitution function in switch_regex.c in FreeSWITCH 1.2 allow remote a

CVE-2026-110658 MEDIUM POC
6.9 Oct 14

Heap out-of-bounds read in Sofia-SIP through 1.13.18 allows unauthenticated remote attackers to crash SIP processes by s

CVE-2023-40019 MEDIUM POC
6.5 Sep 15

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2023-51443 MEDIUM POC
5.9 Dec 27

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to

CVE-2026-49841 CRITICAL
9.8 Jun 09

Heap buffer overflow in FreeSWITCH mod_verto prior to version 1.11.1 allows remote unauthenticated attackers to corrupt

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy