CVE-2024-11148 | OpenBSD httpd(8) null dereference

In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd(8) is vulnerable to a NULL dereference when handling a malformed fastcgi request.

Published: 2024-12-05 Last update: 2025-09-23 Assigner: 9119a7d8-5eab-497f-8521-727c672e3725 Source: 9119a7d8-5eab-497f-8521-727c672e3725
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-11148 is rated Moderate Risk (50.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.22%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-11148

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-14 0.30% 0.22% -0.08%
2 2026-01-13 0.23% 0.30% +0.07%
3 2025-11-21 — 0.23% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-11148

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.7 4.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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:Y/R:X/V:X/RE:X/U:X Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:Y)
Yes: all four kill-chain steps (reconnaissance, weaponization, delivery, exploitation) can be automated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — 9119a7d8-5eab-497f-8521-727c672e3725
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 9119a7d8-5eab-497f-8521-727c672e3725

Weakness enumeration for CVE-2024-11148

OS Trackers for CVE-2024-11148

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2024-11148

Affected software / configurations for CVE-2024-11148

Vendor Product Version Raw CPE
openbsd openbsd < 7.3 cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:*:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:-:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_001:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_002:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_003:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_004:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_005:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_006:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_007:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_008:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_009:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_010:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_011:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_012:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_013:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_014:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_015:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_016:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_017:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_018:*:*:*:*:*:*
openbsd openbsd 7.3 cpe:2.3:o:openbsd:openbsd:7.3:errata_019:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:-:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:errata_001:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:errata_002:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:errata_003:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:errata_004:*:*:*:*:*:*
openbsd openbsd 7.4 cpe:2.3:o:openbsd:openbsd:7.4:errata_005:*:*:*:*:*:*

References for CVE-2024-11148

cvelogic Threat Intelligence