high 7.5

CVE-2019-17007 json

In Network Security Services before 3.44, a malformed Netscape Certificate Sequence can cause NSS to crash, resulting in a denial of servic…

published 2020-10-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7481

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

In Network Security Services before 3.44, a malformed Netscape Certificate Sequence can cause NSS to crash, resulting in a denial of service.

Patch / fix

fixed in 1 distros 3 links 1

Mozilla NSS 3.44

debian ubuntu red hat

nss Debian 14, Debian 13, Debian 12 2:3.45-1

debian advisories DEBIAN-CVE-2019-17007

nss Ubuntu 16.04 LTS 2:3.28.4-0ubuntu0.16.04.9
nss Ubuntu 18.04 LTS 2:3.35-2ubuntu2.6
nss Ubuntu Pro 14.04 LTS 2:3.28.4-0ubuntu0.14.04.5+esm3

ubuntu advisories UBUNTU-CVE-2019-17007

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

nss RHEL 8 3.44.0-7.el8_0
nspr RHEL 8 4.21.0-2.el8_0
nss-util RHEL 8 3.44.0-7.el8_0
nss-tools RHEL 8 3.44.0-7.el8_0
nss-softokn RHEL 8 3.44.0-7.el8_0
nss-sysinit RHEL 8 3.44.0-7.el8_0
nss-softokn-freebl RHEL 8 3.44.0-7.el8_0
nspr RHEL 6 4.21.0-1.el6_10

red hat advisories RHSA-2021:0876 RHSA-2019:1951 RHEA-2019:3280 RHSA-2019:2237

bugzilla.mozilla.org/show_bug.cgi?id=1533216 advisory

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-2019-17007 updated 2026-05-14 cvss 7.5

nss: Handling of Netscape Certificate Sequences in CERT_DecodeCertPackage() may crash with a NULL deref leading to DoS

Red Hat JBoss Enterprise Application Platform 6 nss
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux AppStream (v. 8) nss 3.44.0-7.el8_0, nspr 4.21.0-2.el8_0, nss-util 3.44.0-7.el8_0, nss-tools 3.44.0-7.el8_0, nss-softokn 3.44.0-7.el8_0, nss-sysinit 3.44.0-7.el8_0, +1 more
fixed: vendor fix RHSA-2019:1951
Red Hat Enterprise Linux Client (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more Red Hat Enterprise Linux ComputeNode (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more
fixed: vendor fix RHSA-2019:2237
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-softokn 3.36.0-7.el7_6, nss-sysinit 3.36.0-9.el7_6, nss-softokn-freebl 3.36.0-7.el7_6
fixed: vendor fix RHSA-2021:0876
Red Hat Enterprise Linux ComputeNode Optional (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more
fixed: vendor fix RHSA-2019:2237
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-softokn 3.36.0-7.el7_6, nss-sysinit 3.36.0-9.el7_6, nss-softokn-freebl 3.36.0-7.el7_6
fixed: vendor fix RHSA-2021:0876
Red Hat Enterprise Linux Desktop (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more Red Hat Enterprise Linux Desktop Optional (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more
fixed: vendor fix RHEA-2019:3280
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-softokn 3.36.0-7.el7_6, nss-sysinit 3.36.0-9.el7_6, nss-softokn-freebl 3.36.0-7.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-sysinit 3.36.0-9.el7_6
fixed: vendor fix RHSA-2021:0876

show 10 more

Red Hat Enterprise Linux HPC Node (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more Red Hat Enterprise Linux HPC Node Optional (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more Red Hat Enterprise Linux Server (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more
fixed: vendor fix RHEA-2019:3280
Red Hat Enterprise Linux Server (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more
fixed: vendor fix RHSA-2019:2237
Red Hat Enterprise Linux Server EUS (v. 7.6) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-softokn 3.36.0-7.el7_6, nss-sysinit 3.36.0-9.el7_6, nss-softokn-freebl 3.36.0-7.el7_6
fixed: vendor fix RHSA-2021:0876
Red Hat Enterprise Linux Server Optional (v. 6) nss 3.44.0-7.el6_10, nss-tools 3.44.0-7.el6_10, nss-sysinit 3.44.0-7.el6_10
fixed: vendor fix RHEA-2019:3280
Red Hat Enterprise Linux Server Optional (v. 7) nss 3.44.0-4.el7, nss-tools 3.44.0-4.el7, nss-sysinit 3.44.0-4.el7
fixed: vendor fix RHSA-2019:2237
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) nss 3.36.0-9.el7_6, nss-tools 3.36.0-9.el7_6, nss-sysinit 3.36.0-9.el7_6
fixed: vendor fix RHSA-2021:0876
Red Hat Enterprise Linux Workstation (v. 6) nss 3.44.0-7.el6_10, nspr 4.21.0-1.el6_10, nss-util 3.44.0-1.el6_10, nss-tools 3.44.0-7.el6_10, nss-softokn 3.44.0-5.el6_10, nss-sysinit 3.44.0-7.el6_10, +1 more
fixed: vendor fix RHEA-2019:3280
Red Hat Enterprise Linux Workstation (v. 7) nss 3.44.0-4.el7, nspr 4.21.0-1.el7, nss-util 3.44.0-3.el7, nss-tools 3.44.0-4.el7, nss-softokn 3.44.0-5.el7, nss-sysinit 3.44.0-4.el7, +1 more
fixed: vendor fix RHSA-2019:2237
Red Hat Enterprise Linux Workstation Optional (v. 6) nss 3.44.0-7.el6_10, nss-tools 3.44.0-7.el6_10, nss-sysinit 3.44.0-7.el6_10
fixed: vendor fix RHEA-2019:3280
Red Hat Enterprise Linux Workstation Optional (v. 7) nss 3.44.0-4.el7, nss-tools 3.44.0-4.el7, nss-sysinit 3.44.0-4.el7
fixed: vendor fix RHSA-2019:2237

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

cisa ICSA-21-040-04 updated 2021-02-09 cvss 7.5

Siemens RUGGEDCOM ROX II

Siemens RUGGEDCOM ROX MX5000 <V2.14.0 Siemens RUGGEDCOM ROX RX1400 <V2.14.0 Siemens RUGGEDCOM ROX RX1500 <V2.14.0 Siemens RUGGEDCOM ROX RX1501 <V2.14.0 Siemens RUGGEDCOM ROX RX1510 <V2.14.0 Siemens RUGGEDCOM ROX RX1511 <V2.14.0

+2 more productsfewer

Siemens RUGGEDCOM ROX RX1512 <V2.14.0 Siemens RUGGEDCOM ROX RX5000 <V2.14.0

affected: fixed in V2.14.0, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1533216 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

Mozilla NSS

Classification

Weakness

CWE-295 Improper Certificate Validation

References

bugzilla.mozilla.org /show_bug.cgi?id=1533216
exploit, issue-tracking, patch, vendor-advisory
developer.mozilla.org /en-US/docs/Mozilla/Projects/NSS/NSS_3.44_release_notes
release-notes, vendor-advisory
cert-portal.siemens.com /productcert/pdf/ssa-379803.pdf
third-party-advisory
us-cert.cisa.gov /ics/advisories/icsa-21-040-04
third-party-advisory, us-government-resource

Sources

CVE List CVE-2019-17007
NVD CVE-2019-17007

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.

Summary