CVE-2025-62861
AI description
CVE-2025-62861 is a vulnerability in Bitcoin Core affecting versions 28.0 through 28.2 and 29.0 through 29.1. Discovered by security researcher Niklas Goegge, the flaw stems from the software's Transaction Policy for Requesting Unconfirmed Transactions (TRUC / v3 transaction rules) "sibling transaction eviction" logic during a blockchain reorganization. When a chain reorganization occurs, a node drops blocks and attempts to re-add those transactions back into its mempool with the `bypass_limits` parameter enabled. However, because the sibling-eviction logic was not properly gated by this parameter, TRUC enforcement continued to run during the re-addition process. This could result in a parent transaction being evicted from the mempool while its dependent child transactions remained. This discrepancy led to an inconsistent mempool state where child transactions attempted to spend missing outputs, causing block template creation to fail and preventing affected mining nodes from producing valid blocks. The issue did not allow for the theft of funds or the creation of unauthorized coins, and affected nodes could temporarily resolve the block-production halt by restarting. A fix proposed by developer Greg Sanders was released in October 2025 with Bitcoin Core version 30.0 and backported to the 28.x and 29.x branches. The vulnerability details were publicly disclosed on November 10, 2026, following the end-of-life of the 29.x software branch.
- Description
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Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.
- Hype score
22
BITCOIN CORE FLAGS MINING BUG — A high-severity flaw (CVE-2025-62861) could freeze miners' block building after a chain reorg. Problem: ~9% of nodes still run old versions. Fix: upgrade to Bitcoin Core 30.0+. RK-0066 #traphabits #aitosi
@traphabits101
12 Nov 2026
6 Impressions
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Bitcoin Core just disclosed CVE-2025-62861 (high severity) 🛠️ TRUC mempool logic misbehaving during reorgs could leave miners unable to build block templates until a restart. Affected: v28.0–28.2 and v29.0–29.1. Fixed since v30.0. Old node? Update, ser. $BTC
@Pocno_x
11 Nov 2026
235 Impressions
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🛠️ Bitcoin Core révèle 3 failles corrigées en oct. 2025. La plus grave (CVE-2025-62861, haute) bloquait la création de templates de blocs des mineurs après une réorg, jusqu'au redémarrage du nœud. Corrigé en 30.0, 29.2 et 28.3 ; la 29.x n'est plus maintenue. https:/
@sun_sanchu
11 Nov 2026
3 Impressions
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🛑 #Bitcoin Core arrastra una falla de alta severidad (CVE-2025-62861): los nodos mineros podrían no preparar bloques nuevos tras una reorganización de la cadena. Parcheada en la versión 30.0, sin robo directo de fondos. https://t.co/xMdwg6RX5X
@WhisprNews
11 Nov 2026
103 Impressions
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🚨 Une faille de sécurité majeure aurait pu empêcher certains mineurs de Bitcoin de produire de nouveaux blocs. Bitcoin Core révèle avoir corrigé trois vulnérabilités. La plus grave, identifiée sous le code CVE-2025-62861, pouvait provoquer un dysfonctionnement du mem
@Crypto__Goku
11 Nov 2026
4699 Impressions
8 Retweets
33 Likes
1 Bookmark
2 Replies
0 Quotes
CVE-2025-62861 sits in the gap between policy and consensus. TRUC limits are mempool policy, so a valid block can hold v3 chains the mempool would reject. When a reorg put those txs back, sibling eviction still ran and the node couldn't build blocks till restart. Fixed in 2025.
@arsene_btc
11 Nov 2026
79 Impressions
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比特币节点有个bug能让矿工出不了块，修完一年多才公开细节 Bitcoin Core 11/10 一次披露3个漏洞（1个高危、2个中危），补丁早在2025年10月就发了： 高危 CVE-2025-62861：影响 28.0–28.2、29.0–29.1。链重组时 TRUC(v3) 交
@igasemut
11 Nov 2026
152 Impressions
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2 Replies
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🛡️ Bitcoin Core disclosed CVE-2025-62861, a bug that could stall $BTC mining nodes. It was patched over a year ago with no confirmed exploits. https://t.co/3tHTkTxgaV #Bitcoin #Crypto https://t.co/ZCHJ6G4S9j
@coinwycommm
11 Nov 2026
2 Impressions
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🔥Bitcoin Core fixed three security flaws, including one high-severity bug (CVE-2025-62861) that could halt mining by corrupting a node’s mempool. Two other vulnerabilities (CVE-2025-62859 and CVE-2025-62860) involved block processing delays and privacy issues over Tor
@NewsBlockCrypto
11 Nov 2026
8 Impressions
0 Retweets
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Chicago BitDevs is tomorrow. Socratic Seminar 83 is Thu Nov 12 at 6 PM at the Strike Office, 200 N LaSalle St. On the list: Bitcoin Core's new CVE-2025-62861 disclosure, the LNbits shutdown, BTCPay 2.4.7, the Binance incident, and a couple of OpenSSH and Linux kernel bugs. Bring
@ChiBTCollective
11 Nov 2026
249 Impressions
0 Retweets
4 Likes
0 Bookmarks
1 Reply
0 Quotes
Bitcoin Core rates CVE-2025-62861 High: reorg re-adds still applied v3 (TRUC) eviction, dropping a restored tx but not its children. Nodes on 28.0-28.2 and 29.0-29.1 built no blocks until restart. Mempool policy is not consensus. #ZanbaraX #ZTDX #Bitcoin #BitcoinMining #Mempool
@ZanbaraX
11 Nov 2026
114 Impressions
0 Retweets
1 Like
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$BTC Core ekibi, CVE-2025-62861 kodlu yüksek şiddetli bir mempool açığını 10 Kasım’da açıkladı. Açığın 28.0 ile 29.1 sürümlerini etkilediği, Ekim 2025’te ise yamalandığı bildirildi. #Kripto
@FxKNews
11 Nov 2026
154 Impressions
0 Retweets
1 Like
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🔴 Bitcoin Core patches high-severity mining bug affecting versions 28.0–29.1 Bitcoin Core disclosed three security vulnerabilities on Tuesday, all previously patched in October 2025. The high-severity CVE-2025-62861 affected Bitcoin Core versions 28.0 to 28.2 and 29.0 to 29
@NewsTongueX
11 Nov 2026
91 Impressions
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🚨 Bitcoin Core dévoile 3 failles corrigées. La pire (CVE-2025-62861) : après une réorg, un nœud mineur ne crée plus de template de bloc avant redémarrage. Une autre, via -whitelist, faisait confiance aux pairs Tor entrants. Passez en 28.3, 29.2 ou 30+. https://t.co/zK
@TrojanTx0
11 Nov 2026
72 Impressions
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Bitcoin Core disclosed CVE-2025-62861, a high-severity mempool inconsistency bug affecting versions 28.0 through 29.1 where TRUC sibling eviction rules halted block template creation during chain reorganizations.
@cgmarketwatch
11 Nov 2026
68 Impressions
0 Retweets
1 Like
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Bitcoin Core released a fix for CVE-2025-62861, a high severity vulnerability where chain reorganizations triggered TRUC sibling eviction and halted block template creation in versions 28.0 through 29.1.
@ProtoCallAsia
11 Nov 2026
70 Impressions
0 Retweets
1 Like
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Bitcoin Core version 30.0 patched CVE-2025-62861, a high severity bug where chain reorganizations triggered sibling eviction rules on transactions re-added with bypassed limits, breaking block template creation until node restart. https://t.co/gqpudgAE0E https://t.co/QLMDNxfw8h
@orbitant
11 Nov 2026
166 Impressions
0 Retweets
2 Likes
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Bitcoin Core披露一项影响部分矿工节点的历史漏洞 Bitcoin Core披露CVE-2025-62861高危漏洞，涉及部分旧版本节点在区块重组后可能出现交易内存池不一致，导致矿工节点无法正常生成区块模板。 https://t.co/7dK9ksqbvs
@up18177
11 Nov 2026
103 Impressions
0 Retweets
1 Like
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2 Replies
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⚠️ Bitcoin Core publica un fallo de severidad ALTA (CVE-2025-62861) Qué pasaba: tras una reorganización de la cadena, el mempool podía corromperse y el nodo dejaba de crear plantillas de bloque válidas hasta reiniciarlo. A los mineros los dejaba sin poder producir bloque
@soluparatodosok
11 Nov 2026
234 Impressions
0 Retweets
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📡 Signal｜ビットコインコア、脆弱性 CVE-2025-62861 を公表 深刻度は「高」 ビットコインコアの開発者が脆弱性 CVE-2025-62861 の詳細を公表した。深刻度は「高」。チェーンの組み替えの後、ノードがブロックの候
@LiveMakersCom
11 Nov 2026
134 Impressions
0 Retweets
1 Like
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1 Quote
比特币核心又曝高危漏洞。 CVE-2025-62861，链一重组就能把节点卡到不出块，28、29 版本全中招。 补丁去年 10 月就发了，细节昨天才公开。 自己跑节点的，赶紧升 30.0，别等。 #比特币 #安全 https://t.co/Gbswn7Ou4C
@linjiu321
11 Nov 2026
145 Impressions
0 Retweets
2 Likes
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4 Replies
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A researcher found a Bitcoin Core bug that could stop miners making blocks. Quietly patched before most of us heard. CVE-2025-62861: TRUC sibling-eviction during reorgs. Bad state, failed templates, restart. Fixed in v30.0. Boring maintenance updates matter.
@kuzmin_vitya
11 Nov 2026
8 Impressions
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ETH 有买盘线索，但基金会地址还在卖、ETF 在流出、市场还在定价加息，BitMine 粗算市值低于家底，证据方向不一致，所以不算机会。要转向，得看 BMNR 市值回到家底之上、公司恢复大额增持，同时 ETH ETF 连续两天
@tianyu1443
11 Nov 2026
55 Impressions
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$BTC: Bitcoin Core has published details and a timeline for high-risk bug CVE-2025-62861. Affected: v28.0–28.2 and v29.0–29.1. A TRUC (v3) reorg replay flaw left miners unable to build blocks until nodes restarted. Fixed in v30.0 (Oct 2025); affected versions are now EOL.…
@joy_gajjar27
11 Nov 2026
113 Impressions
0 Retweets
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1 Reply
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🚨速報｜ビットコインコア、脆弱性CVE-2025-62861を公表 ビットコインのソフトウェアに欠陥が見つかった。特定のバージョンで、ネットワークの状態変化に対応できなくなる恐れがある。 ・チェーン再編後に
@LiveMakersCom
11 Nov 2026
37 Impressions
0 Retweets
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1 Reply
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吴说获悉，Bitcoin Core 正式公开了高危漏洞 CVE-2025-62861 的详细技术细节与修复时间线。受影响的 28.0–28.2 及 29.0–29.1 版本中，TRUC（v3 交易） 兄弟驱逐逻辑在链重组（reorg）回放交易时未正确屏蔽， 导致内存池状
@wublockchain12
11 Nov 2026
4395 Impressions
0 Retweets
4 Likes
2 Bookmarks
8 Replies
1 Quote
吴说获悉，Bitcoin Core 正式公开了高危漏洞 CVE-2025-62861 的详细技术细节与修复时间线。受影响的 28.0–28.2 及 29.0–29.1 版本中，TRUC（v3
@wublockchain12
11 Nov 2026
975 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
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【CoinPost Terminal速報】 ビットコインコア、脆弱性CVE-2025-62861を公表 ・脆弱性により、チェーン再編後に対象ノードがブロックテンプレートを作成できなくなる可能性あり ・影響：v28.0-28.2、29.0-29.1 ・修正
@coin_post
11 Nov 2026
6446 Impressions
2 Retweets
9 Likes
2 Bookmarks
0 Replies
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Critical alert: Bitcoin Core disclosed a high-severity vulnerability (CVE-2025-62861) affecting versions 28.0–28.2 and 29.0–29.1. It causes mempool inconsistencies after reorgs, halting valid block templates for miners. No network halt.
@pepeanalyst
11 Nov 2026
109 Impressions
0 Retweets
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Bitcoin Core discloses high-severity flaw that could halt valid blocks after reorg Bitcoin Core has disclosed a high-severity vulnerability, CVE-2025-62861, affecting versions 28.0 to 28.2 and 29.0 to 29.1… Rewritten by AI from Odaily. Source: InvestIn.News
@InvestInNews
11 Nov 2026
105 Impressions
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Update to version 30.0 now to fix three Bitcoin Core vulnerabilities, including CVE-2025-62861, CVE-2025-62860, and CVE-2025-62859 affecting nodes. #BitcoinCore #Bitcoin #BlockchainSecurity #Cybersecurity #InfoSec https://t.co/nwzenckRG6
@Daily_CyberSec
10 Nov 2026
402 Impressions
1 Retweet
1 Like
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0 Quotes