CVE-2017-17715
CVE-2017-17715 is a high-severity vulnerability in Telegram Telegram Messenger with a CVSS 3.x base score of 8.8. 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-22.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Telegram Telegram Messenger
- Published:
- Last modified:
Description
The saveFile method in MediaController.java in the Telegram Messenger application before 2017-12-08 for Android allows directory traversal via a pathname obtained in a file-transfer request from a remote peer, as demonstrated by writing to tgnet.dat or tgnet.dat.bak.
Frequently asked questions
- What is CVE-2017-17715?
- The saveFile method in MediaController.java in the Telegram Messenger application before 2017-12-08 for Android allows directory traversal via a pathname obtained in a file-transfer request from a remote peer, as demonstrated by writing to tgnet.dat or tgnet.dat.bak.
- How severe is CVE-2017-17715?
- CVE-2017-17715 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-17715 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-17715?
- CVE-2017-17715 affects Telegram Telegram Messenger. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-17715?
- 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.
- When was CVE-2017-17715 published?
- CVE-2017-17715 was published on 2017-12-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:telegram:telegram_messenger:*:*:*:*:*:android:*:*
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