How severe is CVE-2021-32755?

CVE-2021-32755 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-32755 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32755?

CVE-2021-32755 affects Wire. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32755?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-32755 published?

CVE-2021-32755 was published on 2021-07-13 and last updated on 2026-06-17.

CVE-2021-32755

CVE-2021-32755 is a medium-severity vulnerability in Wire with a CVSS 3.x base score of 5.4. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.0
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Wire
Published: 2021-07-13
Last modified: 2026-06-17

Description

Wire is a collaboration platform. wire-ios-transport handles authentication of requests, network failures, and retries for the iOS implementation of Wire. In the 3.82 version of the iOS application, a new web socket implementation was introduced for users running iOS 13 or higher. This new websocket implementation is not configured to enforce certificate pinning when available. Certificate pinning for the new websocket is enforced in version 3.84 or above.

Frequently asked questions

What is CVE-2021-32755?: Wire is a collaboration platform. wire-ios-transport handles authentication of requests, network failures, and retries for the iOS implementation of Wire. In the 3.82 version of the iOS application, a new web socket implementation was introduced for users running iOS 13 or higher. This new websocket implementation is not configured to enforce certificate pinning when available. Certificate pinning for the new websocket is enforced in version 3.84 or above.
How severe is CVE-2021-32755?: CVE-2021-32755 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-32755 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32755?: CVE-2021-32755 affects Wire. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32755?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32755 published?: CVE-2021-32755 was published on 2021-07-13 and last updated on 2026-06-17.

References

https://github.com/wireapp/wire-ios-transport/security/advisories/GHSA-v8mx-h3vj-w39v

Affected products (1)

cpe:2.3:a:wire:wire:*:*:*:*:*:*:*:*

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