Electrum Bitcoin Wallet Vulnerability Exploited by Rogue Servers
A critical flaw in older Electrum versions allowed rogue servers to steal Bitcoin during fee bumping.
A critical flaw in older Electrum versions allowed rogue servers to steal Bitcoin during fee bumping. Bitcoin (BTC) is trading at ₹76,42,960 ($80,225.00), up 0.6% since this brief published. This is an original Token Times brief based on reporting by Live Bitcoin News, with live market data added, as of Tue, 27 Oct 2026 12:45:01 UTC.
This vulnerability highlights the risks of light wallet implementations and the importance of prompt security updates in the Bitcoin ecosystem.
- Electrum 4.8.3 fixes a critical vulnerability exploited by rogue servers.
- Attackers stole Bitcoin by faking pending payments during fee bumping.
- At least one user reported a loss, though the full scale is unknown.
- Electrum Wallet Patches Critical Fee Attack Vulnerability
- Electrum Servers Exploit Vulnerability to Swap Bitcoin Payments for Fake Zero-Fee Transactions
- Electrum Patches Critical Bitcoin Wallet Flaw Exploited by Malicious Ads
- Electrum Bitcoin Wallet Vulnerability Exploited by Rogue Servers — this brief
The Electrum 
Bitcoin wallet team has addressed a critical security vulnerability that allowed rogue servers to steal Bitcoin from users. The flaw was present in older versions of the software and was actively exploited by malicious actors.
The attack worked by tricking users into believing they had pending transactions that required fee increases. When users attempted to bump the fees, the rogue servers intercepted the transactions and stole the Bitcoin. This type of attack is particularly insidious as it exploits the trust users place in the wallet's transaction verification process.
The Electrum team released version 4.8.3 on October 24 to patch the vulnerability. This update is crucial for all users who have not yet upgraded, as it closes the security gap that allowed the attacks to occur. The development team has confirmed that at least one user reported a loss, though the full scale of the exploitation is still unknown.
This incident highlights the risks associated with light wallet implementations, which rely on external servers for transaction verification. It also underscores the importance of prompt security updates and user vigilance in the cryptocurrency space.
In the current market context, with Bitcoin trading at $79,743 and showing a slight 24-hour decline of 0.60%, this development serves as a reminder of the ongoing security challenges in the cryptocurrency ecosystem. The overall market remains relatively flat, with a total crypto market cap of $2.74 trillion and a Fear & Greed index of 48, indicating a neutral sentiment.
Since this brief published about 1 hour ago, Bitcoin (BTC) has moved from ₹75,97,039.93$79,743.00 to ₹76,42,959.62$80,225.00 — +0.60%.
The chart plots BTC's price: grey is the move before this brief published, the vertical dashed line marks the moment it published, the horizontal dashed line is the price then, and the coloured area is the move since — from Token Times's market data (daily resolution). It shows what happened after the news, not that the news caused it; many factors move prices. Not financial advice.
Will Bitcoin reach $87,500 in October?
Crowd-implied probability on Polymarket, ₹7.52M 24h volume, resolves Nov 1 — snapshotted when this brief published (Oct 27 12:05 UTC). A market price reflects what traders collectively expect; it is not a forecast by Token Times and will have moved since. View the market ↗
At today's peer-to-peer rate, 1 BTC ≈ ₹8.03M (about $80,225.00), down 0.0% over 24 hours. The rupee itself trades about 5.0% above the official rate on the P2P market, so a Indian buyer's effective cost differs from the headline dollar price.
Live market data
Current prices for the asset in this story — live, source-stamped, updated every 15 minutes.
Figures and sectors in this story, checked live against on-chain aggregators · October 27, 2026.
Token Times reads these figures directly from on-chain aggregators (DeFiLlama, mempool.space) at build time — independent of what any outlet reported. Sector totals aggregate every protocol DeFiLlama tracks in that category. Values are live and will change.
Electrum Bitcoin Wallet Vulnerability Exploited by Rogue Ser — questions & answers
What is the vulnerability in Electrum?
The vulnerability allowed rogue servers to steal Bitcoin during fee bumping by faking pending transactions.
How can Electrum users protect themselves?
Users should upgrade to version 4.8.3 immediately to protect against the vulnerability.
Has anyone lost Bitcoin due to this vulnerability?
Yes, at least one user reported a loss, though the full extent of the damage is unknown.
How much is 1 Bitcoin worth in rupee today?
About ₹8.03M at the live peer-to-peer (P2P) USDT rate, which is what Indians typically trade at — equivalent to roughly $80,225.00. The rupee price moves with both BTC's US-dollar price and the USDT/INR rate; use our Bitcoin in rupee page for any amount.
Has Bitcoin's price moved since this brief was published?
BTC is up 0.60% since this brief first published — trading at ₹76,42,960 ($80,225.00) now versus ₹75,97,040 ($79,743.00) at publication. Token Times re-checks this figure against CoinGecko and Binance every 15 minutes.
Which outlets reported this story?
This is an original Token Times brief that synthesises reporting from Live Bitcoin News. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original Token Times brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.