Ex3400 vulnerabilitiesAnd the versions its exploited flaws hit.

Product3 known exploited0 versions
The short answer

Ex3400 is made by Juniper. We track 51 published vulnerabilities in it, across 0 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 13 November 2023. If you run Ex3400, check your version against the exploited flaws below and patch those first.

Check your version

The most recent Ex3400 flaw added to the known-exploited list is CVE-2023-36844, on 13 November 2023. We keep watching the known-exploited list.

Versions

Which versions of Ex3400 do the exploited flaws hit?

Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.

Known exploited

Which Ex3400 vulnerabilities are being exploited?

3 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 5.3
    CVE-2023-36844MediumKnown exploited
    Juniper Junos OS EX Series PHP External Variable Modification Vulnerability

    Juniper Junos OS on EX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control certain, important environment variables.

    Chance of use90%Known exploited since13 Nov 2023
  2. 5.3
    CVE-2023-36847MediumKnown exploited
    Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

    Juniper Junos OS on EX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

    Chance of use83%Known exploited since13 Nov 2023
  3. 5.3
    CVE-2023-36851MediumKnown exploited
    Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability

    Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

    Chance of use1.1%Known exploited since13 Nov 2023
Exploit likelihood

Which Ex3400 flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 90%
    CVE-2023-36844MediumKnown exploited

    A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to control certain, important environment variables.

    CVSS5.3Published17 Aug 2023
  2. 83%
    CVE-2023-36847MediumKnown exploited

    A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

    CVSS5.3Published17 Aug 2023
  3. 56%

    Embedthis Appweb before 4.6.6 and 5.x before 5.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a Range header with an empty value, as demonstrated by "Range: x=,".

    CVSS5.0Published31 Mar 2015
  4. 5.3%

    A certain crafted HTTP packet can trigger an uninitialized function pointer deference vulnerability in the Packet Forwarding Engine manager (fxpc) on all EX, QFX and MX Series devices in a Virtual Chassis configuration.

    CVSS9.8Published15 Jan 2019
  5. 4.9%

    If RSH service is enabled on Junos OS and if the PAM authentication is disabled, a remote unauthenticated attacker can obtain root access to the device.

    CVSS8.1Published10 Oct 2018
  6. 2.8%

    An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2.

    CVSS7.5Published18 Aug 2018
  7. 2.3%

    A Denial of Service vulnerability in J-Web service may allow a remote unauthenticated user to cause Denial of Service which may prevent other users to authenticate or to perform J-Web operations.

    CVSS7.5Published10 Oct 2018
  8. 2.3%

    A denial of service vulnerability in the telnetd service on Junos OS allows remote unauthenticated users to cause high CPU usage which may affect system performance.

    CVSS5.3Published10 Oct 2018
  9. 2.2%

    A Junos device with VPLS routing-instances configured on one or more interfaces may be susceptible to an mbuf leak when processing a specific MPLS packet.

    CVSS7.5Published11 Apr 2018
Precursor Intelligence

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FAQ

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We track 51 published vulnerabilities listed under the name Ex3400, across 0 versions. The most recent Ex3400 flaw added to the known-exploited list is CVE-2023-36844, on 13 November 2023.

3 are on the list of flaws known to be exploited. The most recently added are CVE-2023-36844, CVE-2023-36847 and CVE-2023-36851.

Create a Precursor Intelligence account and track Ex3400. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.