CVE-2020-27853
9.8
CRITICAL · CVSS 3.1 · EPSS 3.9% (pctl 90)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Wire before 2020-10-16 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a format string. This affects Wire AVS (Audio, Video, and Signaling) 5.3 through 6.x before 6.4, the Wire Secure Messenger application before 3.49.918 for Android, and the Wire Secure Messenger application before 3.61 for iOS. This occurs via the value parameter to sdp_media_set_lattr in peerflow/sdp.c.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.94% — more likely to be exploited than 90% of all CVEs |
| Weakness | CWE-134 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-10-27 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| wire | wire |
| wire | wire - audio\, video\, and signaling |
| wire | wire secure messenger |
References
- http://github.security.telekom.com/2020/11/wire-secure-messenger-format-string-vulnerability.html
- https://github.com/wireapp/wire-audio-video-signaling/issues/23#issuecomment-710075689
- http://github.security.telekom.com/2020/11/wire-secure-messenger-format-string-vulnerability.html
- https://github.com/wireapp/wire-audio-video-signaling/issues/23#issuecomment-710075689
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