CVE-2026-3119 | ISC BIND prior 9.20.21/9.21.20 named assertion

VDB-353135 · CVE-2026-3119 · GCVE-0-2026-3119 ISC BIND PRIOR 9.20.21/9.21.20 NAMED ASSERTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 1.86+ Summaryinfo A vulnerability classified as problematic has been found in ISC BIND up to 9.18.45/9.18.46-S0/9.20.20/9.20.20-S1/9.21.19. This affects an unknown part of the component named. The manipulation leads to assertion. This vulnerability is referenced as CVE-2026-3119. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability, which was classified as problematic, has been found in ISC BIND up to 9.18.45/9.18.46-S0/9.20.20/9.20.20-S1/9.21.19. This issue affects some unknown processing of the component named. The manipulation with an unknown input leads to a assertion vulnerability. Using CWE to declare the problem leads to CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. Impacted is availability. The summary by CVE is: Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected. It is possible to read the advisory at kb.isc.org. The identification of this vulnerability is CVE-2026-3119 since 02/24/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/25/2026). Upgrading to version 9.20.21 or 9.21.20 eliminates this vulnerability. Productinfo Type Domain Name Software Vendor ISC Name BIND Version 9.18.0 9.18.1 9.18.2 9.18.3 9.18.4 9.18.5 9.18.6 9.18.7 9.18.8 9.18.9 9.18.10 9.18.11 9.18.12 9.18.13 9.18.14 9.18.15 9.18.16 9.18.17 9.18.18 9.18.19 9.18.20 9.18.21 9.18.22 9.18.23 9.18.24 9.18.25 9.18.26 9.18.27 9.18.28 9.18.29 9.18.30 9.18.31 9.18.32 9.18.33 9.18.34 9.18.35 9.18.36 9.18.37 9.18.38 9.18.39 9.18.40 9.18.41 9.18.42 9.18.43 9.18.44 9.18.45 9.18.46-S0 9.20.0 9.20.1 9.20.2 9.20.3 9.20.4 9.20.5 9.20.6 9.20.7 9.20.8 9.20.9 9.20.10 9.20.11 9.20.12 9.20.13 9.20.14 9.20.15 9.20.16 9.20.17 9.20.18 9.20.19 9.20.20 9.20.20-S1 9.21.0 9.21.1 9.21.2 9.21.3 9.21.4 9.21.5 9.21.6 9.21.7 9.21.8 9.21.9 9.21.10 9.21.11 9.21.12 9.21.13 9.21.14 9.21.15 9.21.16 9.21.17 9.21.18 9.21.19 License open-source Website Vendor: https://www.isc.org/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.4 VulDB Meta Temp Score: 5.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.5 CNA Vector (isc): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Assertion CWE: CWE-617 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: BIND 9.20.21/9.21.20 Timelineinfo 02/24/2026 CVE reserved 03/25/2026 +29 days Advisory disclosed 03/25/2026 +0 days VulDB entry created 03/25/2026 +0 days VulDB entry last update Sourcesinfo Vendor: isc.org Advisory: kb.isc.org Status: Confirmed CVE: CVE-2026-3119 (🔒) GCVE (CVE): GCVE-0-2026-3119 GCVE (VulDB): GCVE-100-353135 Entryinfo Created: 03/25/2026 15:21 Changes: 03/25/2026 15:21 (64) Complete: 🔍 Cache ID: 99:A78:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸