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CVE-2019-9811· NVD / CVE Program· CNA mozilla

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a br

Noroxi assessment

Priority: Monitor (action score 34/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.5% (FIRST EPSS); higher than 84.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
  • Fixed version: firefox-esr (Debian:10) 60.8.0esr-1~deb10u1; thunderbird (Debian:10) 1:60.8.0-1~deb10u1; firefox-esr (Debian:12) 60.8.0esr-1.

Low priority for now. Upgrade to firefox-esr (Debian:10) 60.8.0esr-1~deb10u1; thunderbird (Debian:10) 1:60.8.0-1~deb10u1; firefox-esr (Debian:12) 60.8.0esr-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

HighCVSS 8.3 · v3.1—No exploit Fix available
Published
Jul 23, 2019
Updated
Jun 16, 2026
EPSS
2.6% · 85th percentile

Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
33 / 40 · 8.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.6%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-9811

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mozillafirefox
mozillafirefox esr
mozillathunderbird
debiandebian linux
novellsuse package hub for suse linux enterprise
opensuseleap

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux8.0
  • mozilla firefoxbefore 68.0
  • mozilla firefox esrbefore 60.8
  • mozilla thunderbirdbefore 60.8
  • novell suse package hub for suse linux enterprise12
  • opensuse leap15.0
  • opensuse leap15.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

  • Mozilla Firefox

    • unspecified and later · before 68affected

  • Mozilla Firefox ESR

    • unspecified and later · before 60.8affected

  • Mozilla Thunderbird

    • unspecified and later · before 60.8affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10firefox-esrbefore 60.8.0esr-1~deb10u160.8.0esr-1~deb10u1
Debian:10thunderbirdbefore 1:60.8.0-1~deb10u11:60.8.0-1~deb10u1
Debian:12firefox-esrbefore 60.8.0esr-160.8.0esr-1
Debian:12thunderbirdbefore 1:60.8.0-11:60.8.0-1
Debian:8firefox-esrbefore 60.8.0esr-1~deb8u160.8.0esr-1~deb8u1
Debian:8thunderbirdbefore 1:60.8.0-1~deb8u11:60.8.0-1~deb8u1
Debian:9firefox-esrbefore 60.8.0esr-1~deb9u160.8.0esr-1~deb9u1
Debian:9thunderbirdbefore 1:60.8.0-1~deb9u11:60.8.0-1~deb9u1
openSUSE:Leap 15.0mozilla-nssbefore 3.44.1-lp150.2.24.13.44.1-lp150.2.24.1
openSUSE:Leap 15.0MozillaThunderbirdbefore 60.8.0-lp151.2.10.160.8.0-lp151.2.10.1
openSUSE:Leap 15.1mozilla-nssbefore 3.44.1-lp151.2.3.13.44.1-lp151.2.3.1
openSUSE:Leap 15.1MozillaFirefoxbefore 60.8.0-lp151.2.10.160.8.0-lp151.2.10.1
Red Hat:enterprise_linux:6::clientfirefoxbefore 0:60.8.0-1.el6_100:60.8.0-1.el6_10
Red Hat:enterprise_linux:6::clientfirefox-debuginfobefore 0:60.8.0-1.el6_100:60.8.0-1.el6_10
Red Hat:enterprise_linux:6::clientthunderbirdbefore 0:60.8.0-1.el6_100:60.8.0-1.el6_10
Red Hat:enterprise_linux:6::clientthunderbird-debuginfobefore 0:60.8.0-1.el6_100:60.8.0-1.el6_10
Red Hat:enterprise_linux:7::clientfirefoxbefore 0:60.8.0-1.el7_60:60.8.0-1.el7_6
Red Hat:enterprise_linux:7::clientfirefox-debuginfobefore 0:60.8.0-1.el7_60:60.8.0-1.el7_6
Red Hat:enterprise_linux:7::clientthunderbirdbefore 0:60.8.0-1.el7_60:60.8.0-1.el7_6
Red Hat:enterprise_linux:7::clientthunderbird-debuginfobefore 0:60.8.0-1.el7_60:60.8.0-1.el7_6
Red Hat:enterprise_linux:8::appstreamfirefoxbefore 0:60.8.0-1.el8_00:60.8.0-1.el8_0
Red Hat:enterprise_linux:8::appstreamfirefox-debuginfobefore 0:60.8.0-1.el8_00:60.8.0-1.el8_0
Red Hat:enterprise_linux:8::appstreamfirefox-debugsourcebefore 0:60.8.0-1.el8_00:60.8.0-1.el8_0
Red Hat:enterprise_linux:8::appstreamthunderbirdbefore 0:60.8.0-1.el8_00:60.8.0-1.el8_0

+9

Same product

mozilla: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV
    94Now
  • CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV
    87Now
  • CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV
    86Now
  • CVE-2013-1690Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properKEV
    86Now
  • CVE-2019-17026Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion.KEV
    79This week
  • CVE-2024-9680An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines.KEV
    76This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:firefox-esr60.8.0esr-1 · Debian:12Package registry (OSV)
debian:thunderbird1:60.8.0-1 · Debian:12Package registry (OSV)
opensuse:mozilla-nss3.44.1-lp151.2.3.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:MozillaFirefox60.8.0-lp151.2.10.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:MozillaThunderbird60.8.0-lp151.2.10.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:firefox0:60.8.0-1.el7_6 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:firefox-debuginfo0:60.8.0-1.el7_6 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:firefox-debugsource0:60.8.0-1.el8_0 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird0:60.8.0-1.el7_6 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:thunderbird-debuginfo0:60.8.0-1.el7_6 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:thunderbird-debugsource0:60.8.0-1.el8_0 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
suse:mozilla-nss3.44.1-58.28.1 · SUSE:OpenStack Cloud 7Package registry (OSV)
suse:MozillaFirefox60.8.0esr-78.43.2 · SUSE:Linux Enterprise Server 11 SP4-LTSSPackage registry (OSV)
suse:MozillaThunderbird60.8.0-3.46.2 · SUSE:Linux Enterprise Workstation Extension 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records