A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application… (CVE-2026-50103)
CVE-2026-50103 is a vulnerability involving a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser. This flaw may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame with a malformed TLV value. No affected versions or patches are specified. The vulnerability is classified as high severity.
AI Analysis
Technical Summary
This vulnerability is a NULL pointer dereference in the Layer 2 GOOSE and R-GOOSE shared parser component. An attacker positioned on the network adjacent to the target can send a specially crafted GOOSE frame containing a malformed Type-Length-Value (TLV) element, triggering the NULL pointer dereference and causing the subscribing application to crash. The vulnerability is identified as CWE-228. No information about affected software versions or available patches is provided in the data.
Potential Impact
Successful exploitation results in a denial of service condition by crashing the subscribing application that processes GOOSE frames. This disrupts normal operation of the affected application but does not indicate code execution or data compromise. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Until a patch is available, network administrators should consider limiting or monitoring network access to the affected application to reduce exposure to crafted GOOSE frames.
A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application… (CVE-2026-50103)
Description
CVE-2026-50103 is a vulnerability involving a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser. This flaw may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame with a malformed TLV value. No affected versions or patches are specified. The vulnerability is classified as high severity.
CVSS v4.0
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a NULL pointer dereference in the Layer 2 GOOSE and R-GOOSE shared parser component. An attacker positioned on the network adjacent to the target can send a specially crafted GOOSE frame containing a malformed Type-Length-Value (TLV) element, triggering the NULL pointer dereference and causing the subscribing application to crash. The vulnerability is identified as CWE-228. No information about affected software versions or available patches is provided in the data.
Potential Impact
Successful exploitation results in a denial of service condition by crashing the subscribing application that processes GOOSE frames. This disrupts normal operation of the affected application but does not indicate code execution or data compromise. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Until a patch is available, network administrators should consider limiting or monitoring network access to the affected application to reduce exposure to crafted GOOSE frames.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mg79-w9qx-hwj2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-50103"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6a629b0d9c2644c7f8d861c7
Added to database: 07/23/2026, 22:51:57 UTC
Last enriched: 07/23/2026, 22:52:21 UTC
Last updated: 07/23/2026, 23:52:03 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.