Exploitation ongoing with high activity in latest observed window (4 mentions)
Recommended action window: Immediate (within 24h)
NVD description
Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
Priority
MEDIUM
Exploitation
ACTIVE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
| Date | Total | Labels |
|---|
| 2026-04-24 | 5 | Active Exploitation1Disclosure2General1Patch1 |
| 2026-04-25 | 1 | Disclosure1 |
| 2026-04-27 | 2 | Disclosure2 |
| 2026-05-12 | 4 | Disclosure2General2 |
#securityupdate #microsoft #定例外 2026. 4.23 Microsoft Bing のリモートでコードが実行される脆弱性 CVE-2026-33819 Security Vulnerability リリース日: - マイクロソフト https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33819
Post summary
Microsoft has announced a new remote code execution vulnerability in Bing (CVE‑2026‑33819) with a security advisory link, but no PoC, exploitation data, or patch information is provided.
--- Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation. CVE: CVE-2026-33819 CVSS: 10 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory
Post summary
A critical vulnerability CVE-2026-33819 with a CVSS 10 rating was disclosed, but no PoC, exploit, or patch information is provided.
CVE: CVE-2026-33819 CVSS: 10 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
Post summary
An advisory discloses CVE-2026-33819, a critical Microsoft Bing deserialization flaw that allows remote code execution.
CRITICAL: CVE-2026-33819 (CVSS 10) — microsoft bing. CVE: CVE-2026-33819 CVSS: 10 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory
Post summary
The text announces a new critical vulnerability, CVE‑2026‑33819, with a CVSS score of 10 but provides no proof of concept, exploit details, patch, or evidence of active exploitation.
#securityupdate #microsoft #定例外 CVE-2026-33819 「…するために、お客様が取るべきアクションはありません」 影響: リモートでコードが実行される 最大深刻度: 緊急 CVSS:3.1 10.0 / 8.7 悪用可能性 ・一般に公開: No ・悪用: No ・Exploitability assessment:対象外 https://x.com/kawn2020/status/2048692187622473771
Post summary
CVE-2026-33819 is a remote code execution vulnerability with maximum severity, but Microsoft states no customer action is required and there is no evidence of PoC, exploitation, or available patch.
🚨 CVE-2026-33819 — CVSS 10/10 ██████████ Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network. Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/H635k5K2Di
Post summary
CVE-2026-33819 is a critical deserialization flaw in Microsoft Bing that enables remote code execution; a patch has already been issued.
https://lyrie.ai/research/research/cve-2026-33819-microsoft-bing #lyrie #cybersecurity #CVE #threatintel #zerodayattack
Post summary
The tweet merely links to a research article about CVE-2026-33819, providing no further details or indicators of exploitation, patching, or technical depth.
CVE-2026-33819 Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network. https://www.cve.org/CVERecord?id=CVE-2026-33819
Post summary
The post announces a deserialization flaw in Microsoft Bing that permits remote code execution, but it offers no PoC, exploit tools, evidence of active misuse, or patch information.
CVE-2026-33819 | Microsoft Bing Remote Code Execution Vulnerability https://www.aakashrahsi.online/post/cve-2026-33819 https://t.co/JhOEMwotcl
Post summary
The tweet links to a post announcing the new CVE-2026-33819, a remote code execution vulnerability in Microsoft Bing.
CVE-2026-33819 is under active exploitation—attackers can execute remote code via Microsoft Bing's deserialization vulnerability. This poses a critical threat to network security. Patch now. #NerdieNews #CyberSecurity #InfoSec #Ransomware #Malware #Microsoft https://t.co/HulfY7Ssxj
Post summary
CVE-2026-33819 is actively exploited for remote code execution through a Microsoft Bing deserialization flaw, and a patch is urgently recommended.
We have just added an important vulnerability affecting Microsoft Bing (CVE-2026-33819) https://vuldb.com/vuln/359230
Post summary
An important vulnerability (CVE‑2026‑33819) affecting Microsoft Bing has been added to a vulnerability database, indicating a recent disclosure.
🪟 CVE-2026-33819 “Bing RCE” is MSRC’s way of saying: stop scrolling, start triaging. Confidence signals matter because attackers love uncertainty—and Defender needs no extra mystery. https://windowsforum.com/threads/cve-2026-33819-bing-rce-how-msrc-confidence-signals-shape-defender-triage.414944/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #VulnerabilityManagement #RemoteCodeExecution #BingSecurity https://t.co/vCVXDPDUd5
Post summary
The post points to a forum thread on MSRC confidence signals for CVE-2026-33819 (Bing RCE) but provides no concrete PoC, exploit code, patch, or detailed technical information.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | microsoft | bing | - | - | - |