How severe is CVE-2026-49475?

CVE-2026-49475 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-49475 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49475?

CVE-2026-49475 affects Freeswitch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49475?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-49475 have an EU (EUVD) identifier?

Yes. CVE-2026-49475 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35470.

When was CVE-2026-49475 published?

CVE-2026-49475 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2026-49475

CVE-2026-49475 is a high-severity vulnerability in Freeswitch with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35470
Weakness: CWE-20
Affected product: Freeswitch
Published: 2026-06-09
Last modified: 2026-06-17

Description

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, a STUN packet whose declared attribute length is shorter than the structure the parser casts to causes the parser to read and write past the end of the attribute, producing an out-of-bounds memory access on the per-leg media buffer. This issue has been patched in version 1.11.0.

Frequently asked questions

What is CVE-2026-49475?: FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, a STUN packet whose declared attribute length is shorter than the structure the parser casts to causes the parser to read and write past the end of the attribute, producing an out-of-bounds memory access on the per-leg media buffer. This issue has been patched in version 1.11.0.
How severe is CVE-2026-49475?: CVE-2026-49475 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-49475 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49475?: CVE-2026-49475 affects Freeswitch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49475?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-49475 have an EU (EUVD) identifier?: Yes. CVE-2026-49475 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35470.
When was CVE-2026-49475 published?: CVE-2026-49475 was published on 2026-06-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

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