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CVE-2019-3825· NVD / CVE Program· CNA redhat

A vulnerability was discovered in gdm before 3.31.4.

Noroxi assessment

Priority: Monitor (action score 25/100)

  • 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: 0.50% (FIRST EPSS).
  • Physical access to the device is required. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: accountsservice-devel (AlmaLinux:8) 0.6.50-8.el8; baobab (AlmaLinux:8) 3.28.0-4.el8; clutter (AlmaLinux:8) 1.26.2-8.el8.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to accountsservice-devel (AlmaLinux:8) 0.6.50-8.el8; baobab (AlmaLinux:8) 3.28.0-4.el8; clutter (AlmaLinux:8) 1.26.2-8.el8 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

A vulnerability was discovered in gdm before 3.31.4. When timed login is enabled in configuration, an attacker could bypass the lock screen by selecting the timed login user and waiting for the timer to expire, at which time they would gain access to the logged-in user's session.

MediumCVSS 6.4 · v3.0—No exploit Fix available
Published
Feb 6, 2019
Updated
Jun 16, 2026
EPSS
0.5% · 42th percentile

Report tools

JSON

Action score

25

Monitor

Low priority for now.

CVSS
25 / 40 · 6.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
6.4
CNA · redhat
6.3
0.1 point gap

CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2019-3825

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
gnomegnome display manager
canonicalubuntu linux
redhatenterprise linux

Affected versions

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

  • canonical ubuntu linux18.04
  • canonical ubuntu linux18.10
  • gnome gnome display managerbefore 3.31.4
  • redhat enterprise linux7.0

Versions reported by the vendor

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

  • The Gnome Projectr gdm

    • 3.31.4affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8accountsservice-develbefore 0.6.50-8.el80.6.50-8.el8
AlmaLinux:8baobabbefore 3.28.0-4.el83.28.0-4.el8
AlmaLinux:8clutterbefore 1.26.2-8.el81.26.2-8.el8
AlmaLinux:8clutter-develbefore 1.26.2-8.el81.26.2-8.el8
AlmaLinux:8clutter-docbefore 1.26.2-8.el81.26.2-8.el8
AlmaLinux:8gjs-develbefore 1.56.2-4.el81.56.2-4.el8
AlmaLinux:8gnome-menusbefore 3.13.3-11.el83.13.3-11.el8
AlmaLinux:8gnome-menus-develbefore 3.13.3-11.el83.13.3-11.el8
AlmaLinux:8gnome-tweaksbefore 3.28.1-7.el83.28.1-7.el8
AlmaLinux:8mozjs52before 52.9.0-2.el8.alma52.9.0-2.el8.alma
AlmaLinux:8mozjs52before 52.9.0-2.el852.9.0-2.el8
AlmaLinux:8mozjs52-develbefore 52.9.0-2.el852.9.0-2.el8
AlmaLinux:8mozjs52-develbefore 52.9.0-2.el8.alma52.9.0-2.el8.alma
AlmaLinux:8mozjs60before 60.9.0-4.el860.9.0-4.el8
AlmaLinux:8mozjs60before 60.9.0-4.el8.alma60.9.0-4.el8.alma
AlmaLinux:8mozjs60-develbefore 60.9.0-4.el860.9.0-4.el8
AlmaLinux:8mozjs60-develbefore 60.9.0-4.el8.alma60.9.0-4.el8.alma
AlmaLinux:8valabefore 0.40.19-1.el80.40.19-1.el8
AlmaLinux:8vala-develbefore 0.40.19-1.el80.40.19-1.el8
Debian:12gdm3before 3.30.2-33.30.2-3
openSUSE:Tumbleweedgdmbefore 3.38.2-2.73.38.2-2.7
Red Hat:enterprise_linux:8::appstreamaccountsservicebefore 0:0.6.50-8.el80:0.6.50-8.el8
Red Hat:enterprise_linux:8::appstreamaccountsservice-debuginfobefore 0:0.6.50-8.el80:0.6.50-8.el8
Red Hat:enterprise_linux:8::appstreamaccountsservice-debugsourcebefore 0:0.6.50-8.el80:0.6.50-8.el8

+96

Same product

gnome: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-14424The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a
    31Monitor
  • CVE-2015-7496GNOME Display Manager (gdm) before 3.18.2 allows physically proximate attackers to bypass the lock screen by holding the Escape key.
    28Monitor
  • CVE-2020-16125gdm3 would start gnome-initial-setup if it cannot contact accountservice
    27Monitor
  • CVE-2013-4169GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X1
    27Monitor
  • CVE-2020-27837A flaw was found in GDM in versions prior to 3.38.2.1.
    25Monitor
  • CVE-2017-12164A flaw was discovered in gdm 3.24.1 where gdm greeter was no longer setting the ran_once boolean during autologin.
    25Monitor

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
almalinux:accountsservice-devel0.6.50-8.el8 · AlmaLinux:8Package registry (OSV)
almalinux:baobab3.28.0-4.el8 · AlmaLinux:8Package registry (OSV)
almalinux:clutter1.26.2-8.el8 · AlmaLinux:8Package registry (OSV)
almalinux:clutter-devel1.26.2-8.el8 · AlmaLinux:8Package registry (OSV)
almalinux:clutter-doc1.26.2-8.el8 · AlmaLinux:8Package registry (OSV)
almalinux:gjs-devel1.56.2-4.el8 · AlmaLinux:8Package registry (OSV)
almalinux:gnome-menus3.13.3-11.el8 · AlmaLinux:8Package registry (OSV)
almalinux:gnome-menus-devel3.13.3-11.el8 · AlmaLinux:8Package registry (OSV)
almalinux:gnome-tweaks3.28.1-7.el8 · AlmaLinux:8Package registry (OSV)
almalinux:mozjs5252.9.0-2.el8.alma · AlmaLinux:8Package registry (OSV)
almalinux:mozjs52-devel52.9.0-2.el8.alma · AlmaLinux:8Package registry (OSV)
almalinux:mozjs6060.9.0-4.el8.alma · AlmaLinux:8Package registry (OSV)
debian:gdm33.30.2-3 · Debian:12Package registry (OSV)
opensuse:gdm3.38.2-2.7 · openSUSE:TumbleweedPackage registry (OSV)
red hat:accountsservice0:0.6.50-8.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:accountsservice-debuginfo0:0.6.50-8.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:accountsservice-debugsource0:0.6.50-8.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:accountsservice-libs0:0.6.50-8.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:accountsservice-libs-debuginfo0:0.6.50-8.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:appstream-data0:8-20191129.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:baobab0:3.28.0-4.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:baobab-debuginfo0:3.28.0-4.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:LibRaw0:0.19.5-1.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:LibRaw-debuginfo0:0.19.5-1.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:LibRaw-debugsource0:0.19.5-1.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:LibRaw-samples-debuginfo0:0.19.5-1.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:baobab0:3.28.0-4.el8 · Rocky Linux:8Package registry (OSV)
rocky linux:clutter0:1.26.2-8.el8 · Rocky Linux:8Package registry (OSV)
rocky linux:gnome-menus0:3.13.3-11.el8 · Rocky Linux:8Package registry (OSV)
rocky linux:gnome-tweaks0:3.28.1-7.el8 · Rocky Linux:8Package registry (OSV)

+3

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Physical access to the device is required.
  • No account or password is required.
  • No user action is required.
  • 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
Attack vector
Physical
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

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

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

All records