Information disclosure in Telegram
CVE-2018-3986
An exploitable information disclosure vulnerability exists in the "Secret Chats" functionality of the Telegram Android messaging application version 4.9.0. The "Secret Chats" functionality allows a user to delete all traces of a chat, either by using a time trigger or by direct request. There is a bug in this functionality that leaves behind photos taken and shared on the secret chats, even after the chats are deleted. These photos will be stored in the device and accessible to all applications installed on the Android device.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Telegram — versions 4.9.0
- Telegram — versions Telegram Messaging Application for Android 4.9.0
Weakness classification (CWE)
References
- www.securityfocus.com/bid/106295 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.talosintelligence.com/vulnerability_reports/TALOS-2018-0654 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-3986?
- CVE-2018-3986 is a medium-severity vulnerability in Telegram, classified under Information Disclosure. CVSS score: 5.5/10. Published 2019-01-03.
- How severe is CVE-2018-3986?
- Medium severity. CVSS v3 base score is 5.5 out of 10.