How severe is CVE-2019-17192?

CVE-2019-17192 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-17192 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-17192?

CVE-2019-17192 affects Signal Private Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-17192?

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

When was CVE-2019-17192 published?

CVE-2019-17192 was published on 2019-10-05 and last updated on 2026-06-17.

CVE-2019-17192

CVE-2019-17192 is a critical-severity vulnerability in Signal Private Messenger with a CVSS 3.x base score of 9.8. 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-670.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-670
Affected product: Signal Private Messenger
Published: 2019-10-05
Last modified: 2026-06-17

Description

The WebRTC component in the Signal Private Messenger application through 4.47.7 for Android processes videoconferencing RTP packets before a callee chooses to answer a call, which might make it easier for remote attackers to cause a denial of service or possibly have unspecified other impact via malformed packets. NOTE: the vendor plans to continue this behavior for performance reasons unless a WebRTC design change occurs

Frequently asked questions

What is CVE-2019-17192?: The WebRTC component in the Signal Private Messenger application through 4.47.7 for Android processes videoconferencing RTP packets before a callee chooses to answer a call, which might make it easier for remote attackers to cause a denial of service or possibly have unspecified other impact via malformed packets. NOTE: the vendor plans to continue this behavior for performance reasons unless a WebRTC design change occurs
How severe is CVE-2019-17192?: CVE-2019-17192 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-17192 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-17192?: CVE-2019-17192 affects Signal Private Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-17192?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-17192 published?: CVE-2019-17192 was published on 2019-10-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:signal:private_messenger:*:*:*:*:*:android:*:*

More vulnerabilities in Signal Private Messenger

CVE-2019-17191 — High (CVSS 7.5): The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered,…
CVE-2019-9970 — Medium (CVSS 6.5): Open Whisper Signal (aka Signal-Desktop) through 1.23.1 and the Signal Private Messenger application through 4.35.3 for…
CVE-2020-5753 — Medium (CVSS 5.3): Signal Private Messenger Android v4.59.0 and up and iOS v3.8.1.5 and up allows a remote non-contact to ring a victim's…
CVE-2018-3988 — Medium (CVSS 4.7): Signal Messenger for Android 4.24.8 may expose private information when using "disappearing messages." If a user uses…

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