I found that some attackers are reportedly using custom UDP socket scripts and network packet tools during Telegram voice chats/groups to abuse network behavior and disrupt VC stability.
For example, I came across a simple UDP socket test script written in C language that sends packets over UDP (CoAP port testing). While this example itself is only a localhost test and not dangerous alone, similar modified scripts/tools can allegedly be abused by attackers for flooding or network-based disruption attempts.
Because of this abuse:
Group voice chats start lagging or glitching
Users get disconnected
VC becomes unstable or crashes
Communities are getting targeted repeatedly
Please investigate whether Telegram VC infrastructure has any vulnerability related to IP/network exposure or UDP abuse, and improve protection against such attacks.
This issue is actively affecting public groups and communities.
Steps to reproduce
Steps to reproduce:
Join or create a public Telegram group with Voice Chat enabled.
Start or join an active Voice Chat session.
After some time, malicious users begin targeting the VC using network/UDP abuse methods.
Voice Chat starts lagging, glitching, or disconnecting users.
Some users experience unstable audio, reconnect loops, or VC crashes.
Expected result:
Voice Chat should remain stable and protected against network abuse.
Actual result:
VC becomes unstable and users get disconnected due to possible abuse/exploit activity.
Many public Telegram VC communities are facing sudden lag, packet loss, and unexpected disconnections during active voice chats. This issue appears to be affecting stability on a wider scale and should be investigated further to improve protection against possible UDP/network abuse and disruption attempts.
🇴 🇿 🇿 🇾
This issue is affecting multiple public groups. VC audio glitches, random disconnects, and crashes are happening frequently. Hope Telegram fixes this soon.
≛⃝𝄟⃟⃟🇲𝐑𓆪🅱️𝐀𝐃𝐍𝐀𝐌🎖️ ≛⃝𝄟
Please investigate this issue. Multiple users in our community are experiencing Voice Chat instability.
POOJA SHARMA
Voice Chats become unstable after some time and users experience reconnect loops and audio glitches.
(✿) 𝗖𝗢 ◉ 𝗢𝗪𝗡𝗘𝗥 (✿)
We can confirm similar VC disruption issues in our Telegram groups. Please investigate this urgently.
~ देव राजपूत ™
Our group Voice Chats are also getting affected by sudden lag, glitches, and reconnect problems.
𝐏𝐬𝐲𝐜𝐡𝐨
Voice Chats are becoming unstable with random lag spikes and disconnects affecting many users.
QnA
Yes same thing experiencing @nobodydeservesme this person challenging me to not to active vc practicing some attack on gc vc @Random_Group_Chatz
𓄀𝐆𝚨𝐔𝚻𝚨Ɱ™𖤍 𓆩🇮🇳𓆪』
I already reported the DDoS issue to the Telegram team, but they still haven't fixed anything. This is really frustrating. Please fix it as soon as possible.
QnA