CVE-2018-15505

mediumpriority · track · 31EPSS 0.022 · 83 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.23% (83rd) EPSS

CVSS 5 · medium

Is it mine?

31 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMSMcisa_csaf_ot
According to Hitachi Energy, users should follow recommended security practices and firewall configurations to help protect a network from outside attacks, including:

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimaryCWE-476USCWE-476US

affected products (31)

Products and version ranges known to be affected.

MSM: <= 2.2.5all versionscisa_csaf_otUS
Hitachi Energy MSM≤ 2.2.5cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Embedthis Software Appweb≤ 7.0.2fstec_bduRU
Embedthis Software Embedthis GoAhead≤ 4.0.1fstec_bduRU
Juniper Networks Inc. JunOS12.3 → 12.3R12-S14fstec_bduRU
Juniper Networks Inc. JunOS12.3X48 → 12.3X48-D80fstec_bduRU
Juniper Networks Inc. JunOS15.1 → 15.1F6-S13fstec_bduRU
Juniper Networks Inc. JunOS15.1X49 → 15.1X49-D170fstec_bduRU
Juniper Networks Inc. JunOS15.1X53 → 15.1X53-D497fstec_bduRU
Juniper Networks Inc. JunOS16.1 → 16.1R4-S13fstec_bduRU
Juniper Networks Inc. JunOS16.2 → 16.2R2-S10fstec_bduRU
Juniper Networks Inc. JunOS17.1 → 17.1R3fstec_bduRU
Juniper Networks Inc. JunOS17.2 → 17.2R2-S7fstec_bduRU
Juniper Networks Inc. JunOS17.3 → 17.3R3-S5fstec_bduRU
Juniper Networks Inc. JunOS17.4 → 17.4R1-S7fstec_bduRU
Juniper Networks Inc. JunOS18.1 → 18.1R3-S5fstec_bduRU
embedthis appweb< 7.0.2nvdUScpe:2.3:a:embedthis:appweb:*:*:*:*:*:*:*:*
embedthis goahead< 4.0.1nvdUScpe:2.3:a:embedthis:goahead:*:*:*:*:*:*:*:*
juniper junos= 12.3nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*

showing 20 of 31

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-23-129-02Hitachi Energy MSM2023-05-10icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to obtain user access credentials of the MSM web interface or cause a denial-of-service condition.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2018-08-18modified 2026-06-17

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references (15)

External citations — patches, advisories, analysis.

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