NVD / CVE Program· CNA redhat

CVE-2025-7039: Glib: buffer under-read on glib through glib/gfileutils.c via get_tmp_file()

Noroxi assessment

Priority: Monitor (action score 14/100)

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: 0.41% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: azl3 glib 2.78.6-3 on Azure Linux 3.0 2.78.6-4; azl3 glib 2.78.6-4 on Azure Linux 3.0 2.78.6-4; cbl2 glib 2.71.0-6 on CBL Mariner 2.0 2.71.0-6.

Low priority for now. Upgrade to azl3 glib 2.78.6-3 on Azure Linux 3.0 2.78.6-4; azl3 glib 2.78.6-4 on Azure Linux 3.0 2.78.6-4; cbl2 glib 2.71.0-6 on CBL Mariner 2.0 2.71.0-6 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 flaw was found in glib. An integer overflow during temporary file creation leads to an out-of-bounds memory access, allowing an attacker to potentially perform path traversal or access private temporary file content by creating symbolic links. This vulnerability allows a local attacker to manipulate file paths and access unauthorized data. The core issue stems from insufficient validation of file path lengths during temporary file operations.

LowCVSS 3.7 · v3.1—No exploit Fix available

Published: Sep 3, 2025
Updated: Oct 18, 2026
EPSS: 0.4% · 35th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 14 / 40 · 3.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.4%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · redhat: 3.7; NVD has not scored this yet; the score shown is the CNA’s.

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.

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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.

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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.

Red Hat Red Hat Enterprise Linux 10
- all versionsaffected
- all versionsaffected
- all versionsaffected
- all versionsaffected
- all versionsaffected
- all versionsaffected
Red Hat Red Hat Enterprise Linux 6
- all versionsunknown
Red Hat Red Hat Enterprise Linux 7
- all versionsunknown
Red Hat Red Hat Enterprise Linux 8
- all versionsunknown
- all versionsunknown
- all versionsunknown
Red Hat Red Hat Enterprise Linux 9
- all versionsunknown
- all versionsunknown
- all versionsunknown
- all versionsunknown

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:11	glib2.0	before 2.66.8-1+deb11u7	2.66.8-1+deb11u7
Debian:12	glib2.0	before 2.74.6-2+deb12u7	2.74.6-2+deb12u7
Debian:13	glib2.0	before 2.84.4-3~deb13u1	2.84.4-3~deb13u1
Debian:14	glib2.0	before 2.84.4-1	2.84.4-1
openSUSE:Leap 15.6	glib2	before 2.78.6-150600.4.22.1	2.78.6-150600.4.22.1
openSUSE:Leap 15.6	glib2-doc	before 2.78.6-150600.4.22.1	2.78.6-150600.4.22.1
openSUSE:Leap 16.0	glib2	before 2.84.4-160000.1.1	2.84.4-160000.1.1
openSUSE:Leap 16.0	glib2-doc	before 2.84.4-160000.1.1	2.84.4-160000.1.1
openSUSE:Tumbleweed	glib2	before 2.84.4-1.1	2.84.4-1.1
Red Hat:hummingbird:1	glib2	before 0:2.88.0-1.1.hum1	0:2.88.0-1.1.hum1
Red Hat:hummingbird:1	glib2-devel	before 0:2.88.0-1.1.hum1	0:2.88.0-1.1.hum1
Red Hat:hummingbird:1	glib2-doc	before 0:2.88.0-1.1.hum1	0:2.88.0-1.1.hum1
Red Hat:hummingbird:1	glib2-static	before 0:2.88.0-1.1.hum1	0:2.88.0-1.1.hum1
Red Hat:hummingbird:1	glib2-tests	before 0:2.88.0-1.1.hum1	0:2.88.0-1.1.hum1
SUSE:Linux Enterprise Micro 5.2	glib2	before 2.62.6-150200.3.33.1	2.62.6-150200.3.33.1
SUSE:Linux Enterprise Micro 5.3	glib2	before 2.70.5-150400.3.26.1	2.70.5-150400.3.26.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6	glib2	before 2.78.6-150600.4.22.1	2.78.6-150600.4.22.1
SUSE:Linux Enterprise Server 16.0	glib2	before 2.84.4-160000.1.1	2.84.4-160000.1.1
SUSE:Linux Enterprise Server 16.0	glib2-branding-SLE	before 16-160000.2.2	16-160000.2.2
SUSE:Linux Enterprise Server 16.0	glib2-doc	before 2.84.4-160000.1.1	2.84.4-160000.1.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5	glib2	before 2.48.2-12.49.1	2.48.2-12.49.1
SUSE:Linux Micro 6.0	glib2	before 2.76.2-10.1	2.76.2-10.1
SUSE:Linux Micro 6.1	glib2	before 2.78.6-slfo.1.1_5.1	2.78.6-slfo.1.1_5.1

Same product

red hat: all records

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39Monitor

Published before and after this one in the same product

← EarlierCVE-2023-32255Aug 2, 2025 · Kernel: memory leak via ksmbd session setup request with unknown ntlmssp message type
21Monitor
← EarlierCVE-2023-5342Aug 14, 2025 · Shim: expired secure boot certificate
16Monitor
Later →CVE-2025-9901Sep 3, 2025 · Libsoup: improper handling of http vary header in libsoup caching
23Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
azl3 glib 2.78.6-3 on Azure Linux 3.0	2.78.6-4 · CBL-Mariner Releases	Microsoft (MSRC)
azl3 glib 2.78.6-4 on Azure Linux 3.0	2.78.6-4 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 glib 2.71.0-6 on CBL Mariner 2.0	2.71.0-6 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 glib 2.71.0-7 on CBL Mariner 2.0	2.71.0-8 · CBL-Mariner Releases	Microsoft (MSRC)
debian:glib2.0	2.74.6-2+deb12u7 · Debian:12	Package registry (OSV)
opensuse:glib2	2.78.6-150600.4.22.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:glib2-doc	2.78.6-150600.4.22.1 · openSUSE:Leap 15.6	Package registry (OSV)
red hat:glib2	0:2.88.0-1.1.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:glib2-devel	0:2.88.0-1.1.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:glib2-doc	0:2.88.0-1.1.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:glib2-static	0:2.88.0-1.1.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:glib2-tests	0:2.88.0-1.1.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
suse:glib2	2.78.6-150600.4.22.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6	Package registry (OSV)
suse:glib2	2.78.6-slfo.1.1_5.1 · SUSE:Linux Micro 6.1	Package registry (OSV)
suse:glib2-branding-SLE	16-160000.2.2 · SUSE:Linux Enterprise Server 16.0	Package registry (OSV)
suse:glib2-doc	2.84.4-160000.1.1 · SUSE:Linux Enterprise Server 16.0	Package 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.

No history yet (it accumulates with the daily EPSS job).

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.

CVE-2026-96275385 days apartFlatpak: flatpak: arbitrary write access as root via extra-data extraction
35Monitor
CVE-2025-95662 days apartPodman: podman kube play command may overwrite host files
32Monitor
CVE-2025-602078 days apartLinux-pam: linux-pam directory traversal
31Monitor
CVE-2026-96276385 days apartFlatpak: flatpak: arbitrary write in host context via flatpak build-init
26Monitor
CVE-2026-107466400 days apartFlatpak-builder: local file exfiltration via `file
24Monitor
CVE-2026-85518413 days apartOpenscap: openscap: arbitrary file write via path traversal in source datastream decomposition
24Monitor

Chain candidates

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

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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.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: none
Integrity: low · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: Low
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-secondary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

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

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

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

References

access.redhat.com/security/cve/CVE-2025-7039

Show all references (2 more)

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

All records