CVE-2023-4807Patch(openssl / openssl)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch openssl openssl systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Issue summary: The POLY1305 MAC (message authentication code) implementation contains a bug that might corrupt the internal state of applications on the Windows 64 platform when running on newer X86_64 processors supporting the AVX512-IFMA instructions. Impact summary: If in an application that uses the OpenSSL library an attacker can influence whether the POLY1305 MAC algorithm is used, the application state might be corrupted with various application dependent consequences. The POLY1305 MAC (message authentication code) implementation in OpenSSL does not save the contents of non-volatile XMM registers on Windows 64 platform when calculating the MAC of data larger than 64 bytes. Before returning to the caller all the XMM registers are set to zero rather than restoring their previous content. The vulnerable code is used only on newer x86_64 processors supporting the AVX512-IFMA instructions. The consequences of this kind of internal application state corruption can be various - from no consequences, if the calling application does not depend on the contents of non-volatile XMM registers at all, to the worst consequences, where the attacker could get complete control of the application process. However given the contents of the registers are just zeroized so the attacker cannot put arbitrary values inside, the most likely consequence, if any, would be an incorrect result of some application dependent calculations or a crash leading to a denial of service. The POLY1305 MAC algorithm is most frequently used as part of the CHACHA20-POLY1305 AEAD (authenticated encryption with associated data) algorithm. The most common usage of this AEAD cipher is with TLS protocol versions 1.2 and 1.3 and a malicious client can influence whether this AEAD cipher is used by the server. This implies that server applications using OpenSSL can be potentially impacted. However we are currently not aware of any concrete application that would be affected by this issue therefore we consider this a Low severity security issue. As a workaround the AVX512-IFMA instructions support can be disabled at runtime by setting the environment variable OPENSSL_ia32cap: OPENSSL_ia32cap=:~0x200000 The FIPS provider is not affected by this issue.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-440

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • openssl

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
openssl

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-08: 1Patch / Workaround · 2026-04-08: 1Technical Details · 2026-04-08: 104-08
Signal classification1 categories
Patch
1100.0%
Referenced assets2 URLs
By indicator
Full discourse1 post
  • Syed Aquib@syedaquib77
    Patch

    ⚠️ **Vulnerability Alert:** CISA ICS Advisory: Mitsubishi Electric GENESIS64 and ICONICS Suite products (multiple ICS advisories/updates) 📅 **Timeline:** Disclosure: 2026-04-07, Patch: Multiple (see references) 🆔 **CVE-2025-14815** | 📊 CVSS: 8.8 (HIGH 🟠) | 📈 EPSS: Not Available 🆔 **CVE-2025-14816** | 📊 CVSS: 8.8 (HIGH 🟠) | 📈 EPSS: Not Available 🆔 **CVE-2025-7376** | 📊 CVSS: 5.9 (MEDIUM 🟡) | 📈 EPSS: 1.456% 🆔 **CVE-2025-0921** | 📊 CVSS: 6.5 (MEDIUM 🟡) | 📈 EPSS: 20.714% 🆔 **CVE-2024-8299** | 📊 CVSS: 7.8 (HIGH 🟠) | 📈 EPSS: 6.927% 🆔 **CVE-2024-8300** | 📊 CVSS: 7.0 (HIGH 🟠) | 📈 EPSS: 10.572% 🆔 **CVE-2024-9852** | 📊 CVSS: 7.8 (HIGH 🟠) | 📈 EPSS: 6.927% 🆔 **CVE-2023-2650** | 📊 CVSS: 3.7 (LOW 🟢) | 📈 EPSS: 99.698% 🆔 **CVE-2023-4807** | 📊 CVSS: 5.9 (MEDIUM 🟡) | 📈 EPSS: 74.338% 🆔 **CVE-2024-1182** | 📊 CVSS: 7.0 (HIGH 🟠) | 📈 EPSS: 18.210% 🆔 **CVE-2024-1573** | 📊 CVSS: 5.9 (MEDIUM 🟡) | 📈 EPSS: 47.466% 🆔 **CVE-2024-1574** | 📊 CVSS: 6.7 (MEDIUM 🟡) | 📈 EPSS: 34.105% 🛠️ **Exploit Maturity:** Not Available 📂 **Affected Versions:** GENESIS64/ICONICS Suite/MobileHMI/Hyper Historian/AnalytiX <=10.97.3, MC Works64 — all versions, GENESIS <=11.03 (varies by advisory), IoTWorX 10.95, GENESIS32/BizViz — various versions 🔧 **Fixed Versions:** GENESIS64/ICONICS Suite/MobileHMI/Hyper Historian/AnalytiX: 10.98+, GENESIS: 11.01 / 11.03+, IoTWorX: 10.96+, No fix for MC Works64/GENESIS32/BizViz — vendor mitigations 🫨 **Attack Vectors:** - Local attacker / local access required - Cleartext storage of SQL credentials in local SQLite cache and plaintext display in GUI - Windows .LNK/symbolic-link exploitation enabling arbitrary writes - DLL search-path/DLL planting (uncontrolled search path) - OpenSSL parsing via BACnet Secure Connect (remote malformed cert/MAC) - Authentication bypass via AD + automatic logon conditions - Execution with unnecessary privileges / unsafe reflection 📝 **Summary:** Multiple local (and some remote) vulnerabilities across Mitsubishi/ICONICS ICS products expose plaintext SQL credentials, enable arbitrary file writes and DLL planting, and allow authentication bypass or unsafe code execution paths. Impacts include credential disclosure, tampering, denial-of-service, and, in some cases, elevated arbitrary code execution — patch immediately where available and apply mitigations for unpatchable products. 📈 **Impact Scope:** Affects multiple Mitsubishi Electric / ICONICS products used in critical manufacturing ICS: credential disclosure, information disclosure, arbitrary file tampering/deletion, DoS, and potential code execution with elevated privileges. 🛡️ **Recommended Actions:** - Apply vendor-supplied patches immediately; isolate ICS networks, restrict remote/admin logins and enforce least privilege. - Disable/delete local cache (C:\ProgramData\ICONICS\Cache\*.sdf and C:\ProgramData\ICONICS\11\Cache\*.sqlite3), prefer Windows auth for SQL Server, harden HHSplitter.exe, and follow vendor mitigations for unpatched products. 🪢 **Related Resources:** - https://www.youtube.com/watch?v=KsZ6tROaVOQ - https://en.wikipedia.org/wiki/2 🏷 **Tags:** #Cybersecurity #ICS #MitsubishiElectric

    Post summary

    The advisory announces multiple high‑severity CVEs affecting Mitsubishi Electric and ICONICS products, provides detailed technical and exploit vector information, and emphasizes applying vendor patches and mitigations.

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CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appopensslopenssl---

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