7.5

CVE-2021-36513: signalwire freeswitch Missing Initialization of Resource

Modified
Published 18-10-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-36513 is a high (CVSS 7.5) Missing Initialization of Resource vulnerability in signalwire freeswitch. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79.5% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.87%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 18-10-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in function sofia_handle_sip_i_notify in sofia.c in SignalWire freeswitch before 1.10.6, may allow attackers to view sensitive information due to an uninitialized value.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.87%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.87% on 11-10-2026

11-10-202610-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Freeswitch

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Signalwire1 product

1 vendor · 1 product

References

3 links