CVE-2025-12642
Essential information
- Published
- 03/11/2025 20:17
- Modified
- 12/11/2025 14:34
- Author
- —
- Creator
- —
- CVSS
- 6.9 MEDIUM (v3) 6.9 MEDIUM (v4.0)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
—
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Privileges required
- —
- User interaction
- —
- Scope
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- LOW
- Attack requirements
- NONE
- Privileges required
- NONE
- User interaction
- NONE
- Confidentiality (V)
- NONE
- Confidentiality (S)
- NONE
- Integrity (V)
- NONE
- Integrity (S)
- LOW
- Availability (V)
- NONE
- Availability (S)
- NONE
- Exploit maturity
- NOT_DEFINED
Description
lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks.
Successful exploitation may allow an attacker to:
* Bypass access control rules
* Inject unsafe input into backend logic that trusts request headers
* Execute HTTP Request Smuggling attacks under some conditions
This issue affects lighttpd1.4.80
NVD status
- Status
- Analyzed — CVE has had analysis completed and all data associations made.
- Source
- 1c6b5737-9389-4011-8117-89fa251edfb2
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| lighttpd / lighttpd | cpe:2.3:a:lighttpd:lighttpd:1.4.80:*:*:*:*:*:*:* |