CVE-2018-15505

Exp

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. An HTTP POST request with a specially crafted "Host" header field may cause a NULL pointer dereference and thus cause a denial of service, as demonstrated by the lack of a trailing ']' character in an IPv6 address.

Published: 2018-08-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-15505 is rated High Exploit Risk (74.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.23%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.69% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2018-15505

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-15505

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 2026-06-15 0.54% 2.23% +1.69%
2 2026-06-14 0.59% 0.54% -0.05%
3 2026-05-12 — 0.59% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-15505

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
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 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-15505

Affected software / configurations for CVE-2018-15505

Vendor Product Version Raw CPE
embedthis appweb < 7.0.2 cpe:2.3:a:embedthis:appweb:*:*:*:*:*:*:*:*
embedthis goahead < 4.0.1 cpe:2.3:a:embedthis:goahead:*:*:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:-:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r1:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r10:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r10-s1:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r10-s2:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r11:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s1:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s10:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s11:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s12:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s13:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s20:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s3:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s4:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s6:*:*:*:*:*:*
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:r12-s8:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:-:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d10:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d15:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d20:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d25:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d30:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d35:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d40:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d45:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d50:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d51:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d55:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d60:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d65:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d66:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d70:*:*:*:*:*:*
juniper junos 12.3x48 cpe:2.3:o:juniper:junos:12.3x48:d75:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:-:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:a1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f5-s7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s10:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s12:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s5:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s8:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s9:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s10:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s11:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s12:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s3:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:-:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d10:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d100:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d110:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d120:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d130:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d131:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d140:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d15:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d150:*:*:*:*:*:*
juniper junos 15.1x49 cpe:2.3:o:juniper:junos:15.1x49:d160:*:*:*:*:*:*
juniper junos 15.1x53 cpe:2.3:o:juniper:junos:15.1x53:*:*:*:*:*:*:*

References for CVE-2018-15505

cvelogic Threat Intelligence