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No exploitation reportedFix available

CVE-2018-15504

No exploitation reported by the sources we read.

  • Published2018-08-18
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. The server mishandles some HTTP request fields associated with time, which results in a NULL pointer dereference, as demonstrated by If-Modified-Since or If-Unmodified-Since with a month greater than 11.

Timeline

dates in UTC
  1. 2018-08-1803:29CVE publishedNVD

Versions per branch

NVD
Juniper junosversion to verify
BranchAffectedFixed in
12.1= 12.1x46no fix published
12.3= 12.3x48no fix published
15.1= 15.1x49no fix published
12.3= 12.3no fix published
15.1= 15.1no fix published
15.1= 15.1x53no fix published
16.1= 16.1no fix published
16.2= 16.2no fix published
17.1= 17.1no fix published
17.2= 17.2no fix published
17.3= 17.3no fix published
17.4= 17.4no fix published
Embedthis appweb
BranchAffectedFixed in
7.0< 7.0.27.0.2
Embedthis goahead
BranchAffectedFixed in
4.0< 4.0.14.0.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-23-129-02 · 1 productMSM is not intrinsically designed nor intended to be directly connected to the internet. Users should disconnect the device from any internet-facing network.
  2. Vendor fix CISA ICSA-23-129-02 · 1 productHitachi Energy suggests adopting user access management and antivirus protection software equipped with the latest signature rules on hosts with the Manufacturing Message Specification (MMS) Client application installed. Users can implement the operating system user access management functionality,…
  3. Vendor fix CISA ICSA-23-129-02 · 1 productAlso, Hitachi Energy recommends following the hardening guidelines published by “The Center for Internet Security (CIS)” to protect the host operating system of machines connecting with MSM. These guidelines help prevent the lateral movement of the attack vector into MSM via these connected devices…
  4. Vendor fix CISA ICSA-23-129-02 · 1 productCIS Microsoft Windows Desktop Benchmarks (cisecurity.org)
  5. Vendor fix CISA ICSA-23-129-02 · 1 productCIS Microsoft Windows Server Benchmarks (cisecurity.org)
  6. Vendor fix CISA ICSA-23-129-02 · 1 productAccording to Hitachi Energy, users should follow recommended security practices and firewall configurations to help protect a network from outside attacks, including:

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2018-08-18
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-x64c-pwxp-r95w

Frequently asked questions

What is CVE-2018-15504?

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. The server mishandles some HTTP request fields associated with time, which results in a NULL pointer dereference, as demonstrated by If-Modified-Since or If-Unmodified-Since with a month greater than 11.

Is CVE-2018-15504 actively exploited?

Active exploitation of CVE-2018-15504 has not been confirmed. Its EPSS score was 2.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-15504?

CVE-2018-15504 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record