CVE-2025-55315CriticalConfirmedExploit available
MSR
MSR
Microsoft Security Response Center
The Security Update Guide is the source of truth for vulnerabilities in Microsoft products — KB article numbers, impacted builds and replacement patches. MSRC also assigns the MSRC-specific exploitability index used alongside CVSS.
Region
US
Updates
Patch Tuesday + ad-hoc
License
Proprietary
Microsoft's Security Update Guide, covering Windows, Office, Azure, SQL Server, Exchange and other first-party products.
https://msrc.microsoft.com/update-guide →Share link
Anyone with the link can open this vulnerability.
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a …
CVSS
9.9
Critical
EPSS
0.66
p99
Published
2025-01-01
Updated
2025-01-01
Description
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.
Tags · CWE
CWE-444
CWE-444BaseIncomplete
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
https://cwe.mitre.org/data/definitions/444.html →Open in CWE collection →CAPEC-33
CAPEC-33DetailedStable
HTTP Request Smuggling
https://capec.mitre.org/data/definitions/33.html →Open in CAPEC collection →
CAPEC-273
CAPEC-273DetailedStable
HTTP Response Smuggling
https://capec.mitre.org/data/definitions/273.html →Open in CAPEC collection →
Affected products
Asp.net_core 2.3.0–2.3.6Asp.net_core 8.0.0–8.0.21Asp.net_core 9.0.0–9.0.10Visual_studio_2022 17.10.0–17.10.20Visual_studio_2022 17.12.10–17.12.13Visual_studio_2022 17.14.0–17.14.17
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Timeline
2025-01-01
Published
2025-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: C
Changed (C)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: L
Low (L)
Exploit indicators
EPSS
0.663 · p99
Known exploited (KEV)
No
Known exploits — Сканер-ВС
52492
exploitdb · https://www.exploit-db.com/exploits/52492
CVE-2025-55315
github-poc · https://github.com/NetVanguard-cmd/CVE-2025-55315
Affected products
| Product | Vendor | Status |
|---|---|---|
| dotnet10 | Tracked | |
| dotnet10 | Tracked | |
| dotnet6 | Tracked | |
| dotnet7 | Tracked | |
| dotnet8 | Tracked | |
| dotnet8 | Tracked | |
| dotnet8 | Tracked | |
| dotnet8 | Tracked | |
| dotnet9 | Tracked | |
| dotnet9 | Tracked | |
| asp.net_core | * | Tracked |
| visual_studio_2022 | * | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
| Windows | Microsoft | Tracked |
Source databases
MSR
MSR
Microsoft Security Response Center
The Security Update Guide is the source of truth for vulnerabilities in Microsoft products — KB article numbers, impacted builds and replacement patches. MSRC also assigns the MSRC-specific exploitability index used alongside CVSS.
Region
US
Updates
Patch Tuesday + ad-hoc
License
Proprietary
Microsoft's Security Update Guide, covering Windows, Office, Azure, SQL Server, Exchange and other first-party products.
https://msrc.microsoft.com/update-guide →CVE
CVE
National Vulnerability Database
NVD is the U.S. government repository of standards-based vulnerability management data, built on top of the MITRE CVE list. Every record includes CPE applicability statements, CVSS v2 and v3.x base scores, CWE mappings and cross-references to advisories.
Region
US
Updates
15 min
License
Public Domain
Comprehensive catalog of publicly disclosed vulnerabilities with CPE matches, CVSS scoring and reference URLs. De-facto standard for cross-vendor correlation.
https://nvd.nist.gov →UBU
UBU
Ubuntu Security Notices (USN)
USNs are authoritative for Ubuntu systems. The CVE Tracker links each vulnerability to its per-release status (needed, released, not-affected) and to the exact Launchpad bug where the fix is integrated.
Region
Intl.
Updates
1 ч
License
CC BY-SA 3.0
Security notices for Ubuntu LTS and interim releases, covering main, universe and (via Pro) ESM-extended packages.
https://ubuntu.com/security/notices →Related vulnerabilities
External references
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315@https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/@https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040https://www.cve.org/CVERecord?id=CVE-2025-55315@https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315@https://ubuntu.com/security/notices/USN-7822-1