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TI-2026-74864 Aliases CVE-2026-111105

Out-of-bounds write in Telegram rlottie enables code execution

Priority LOW 32CWE-197Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

Telegram from 6.6.2 is affected by a numeric truncation flaw (CWE-197) in the rlottie library. Missing validation of user-supplied data lets a write occur before the start of an allocated buffer. A remote attacker can execute code in the context of the current Telegram process if a user visits a malicious page or opens a malicious file.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Telegram rlottie Numeric Truncation Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Telegram. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the rlottie library. The issue results from the lack of proper validation of user-supplied data, which can result in a write before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30207.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TelegramTelegram6.6.2—No fix listedCNA
  • Telegram VendorTelegram Affected 6.6.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Telegram.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111105
  2. 2026-10-18 Affected versions changed · Red Hat
  3. 2026-10-18 CVSS score added · Red Hat

References

Other 1

  • TI-2026-69140 Telegram Desktop IPC Record Injection Enables File Exfiltration CVSS 4.0HIGH 8.6
  • TI-2026-63443 Cross-site scripting in Telegram Desktop CVSS 4.0HIGH 8.3
  • TI-2018-11088 An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. CVSS 3.0MEDIUM 6.8
  • TI-2021-10892 The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of… CVSS 3.1MEDIUM 5.7
  • TI-2023-11787 Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or… CVSS 3.1MEDIUM 5.5
  • TI-2026-06783 Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference CVSS 4.0MEDIUM 5.3
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences