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Fencer Vulns
medium 5.9

CVE-2018-19132 json

Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.

published 2018-11-09 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10845

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.9%
EPSS 5.9% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.

Patch / fix

  • squid-cache squid 4.4
  • squid Debian 14, Debian 13, Debian 12 4.4-1

debian advisories DEBIAN-CVE-2018-19132

  • squid3 Ubuntu 16.04 LTS 3.5.12-1ubuntu7.7
  • squid3 Ubuntu 18.04 LTS 3.5.27-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2018-19132

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • squid SLES 12 SP4, SLES 12 SP3, SLES for SAP 12 SP4 +1 more 3.5.21-26.12.1
  • squid SLE Module for Server Applications 15 4.4-5.3.2

suse advisories SUSE-SU-2018:3771-2SUSE-SU-2018:3786-1SUSE-SU-2018:3771-1

  • squid openSUSE Tumbleweed 4.16-1.5

opensuse advisories openSUSE-SU-2024:11403-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19132 updated cvss 5.9

squid: Memory leak in SNMP query rejection code

  • Red Hat Enterprise Linux 6 squid34 Red Hat Enterprise Linux 7 squid, squid-sysvinit, squid-migration-script
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 squid Red Hat Enterprise Linux 6 squid Red Hat Enterprise Linux 8 squid, libecap
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.88% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.