Reserved IP Address°C
04-29-2025
BSV
$39.29
Vol 42.75m
-1.2%
BTC
$95060
Vol 24108.74m
0.54%
BCH
$372.01
Vol 290.86m
6.39%
LTC
$85.67
Vol 324.49m
-0.16%
DOGE
$0.17
Vol 1120.68m
0.5%
Getting your Trinity Audio player ready...

Hong Kong-based cryptocurrency exchange OKEx has put the brakes on all ECR20 deposits following the possible discovery of a bug in at least 12 smart contracts that are built to the ECR20 standard. The news came out Tuesday, forcing the exchange into action to prevent attackers from exploiting the bug.

The smart contract bug, called “BatchOverFlow,” allows an attacker to create tokens from thin air and then deposit them into a verified Ethereum wallet. In a statement, OKEx said attackers who exploit the bug “can generate an extremely large amount of tokens, and deposit them into a normal address,” which “makes many of the ERC-20 tokens vulnerable to price manipulations of the attackers.”

“To protect public interest, we have decided to suspend the deposits of all ERC-20 tokens until the bug is fixed. Also, we have contacted the affected token teams to conduct investigation and take necessary measures to prevent the attack,” according to the exchange.

Following OKEx’s suspension, another cryptocurrency exchange followed suit. Changelly, which operates as a broker between exchanges and users, announced via Twitter that it would be suspending deposits following “an exploit check.” Changelly promised to bring the tokens back as soon as they’re certain “there is no vulnerability in deposits received.”

The bug was first identified over the weekend and published in a post on Medium. The author of the post, “ranimes,” claims that it could affect over 20 ERC20 smart contracts. The post includes several proofs-of-concept, showing the validity of the bug.

How much damage has been done and what tokens were affected isn’t known. However, BeautyChain, a beauty-themed ecosystem, was already exploited. Once the exploit of its coin, BEC, was identified, exchanges began suspending BEC trading, and some rolled back BEC trades.  OKEx rolled back BEC/BTC, BEC/ETH and BEC/USDT to 1:18 PM April 22, Hong Kong time.

Recommended for you

Build AI agents just for BSV: The BSV MCP server is here
BSV MCP server can perform many tasks, including generating keys, decoding transactions or scripts, fetching transaction data from TXIDs, and...
April 29, 2025
India’s quantum leap poses national security risks: NITI Aayog
NITI Aayog's report said that quantum techs would usher in next-generation advancements in defense and assess its impact on national...
April 24, 2025
Advertisement
Advertisement
Advertisement