CVE-2025-14087 [Medium] | Integer Overflow in Glib

A flaw was found in GLib (Gnome Lib). This vulnerability allows a remote attacker to cause heap corruption, leading to a denial of service or potential code execution via a buffer-underflow in the GVariant parser when processing maliciously crafted input strings.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-12	0.05%	0.09%	+0.05%
2	2026-05-08	0.06%	0.05%	-0.01%
3	2026-04-21	—	0.06%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-12

0.05%

0.09%

+0.05%

2026-05-08

0.06%

0.05%

-0.01%

2026-04-21

—

0.06%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.6	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.2	3.4	[email protected]
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.6

3.1

MEDIUM

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.2

3.4

[email protected]

9.8

3.1

CRITICAL

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

OS Trackers for CVE-2025-14087

vendor	priority	summary	link
`alpine`	—	CVE-2025-14087: 1 source package rows (glib); 47 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 47.	https://security.alpinelinux.org/vuln/CVE-2025-14087
`debian`	not yet assigned	CVE-2025-14087 not yet assigned priority: Debian including 1 source packages (glib2.0), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2025-14087
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2025-14087
`suse`	high	CVE-2025-14087 severity important: SUSE including 412 source package names (13.2-9.56:coreutils-9.4-5.1, 13.2-9.56:libglib-2_0-0-2.76.2-11.1, …), 2279 product×package rows across 317 product lines (Container suse/manager/4.3/proxy-httpd, Container suse/manager/4.3/proxy-salt-broker, … (317 product lines)): Fixed 2029, Known Affected 231, First Fixed 18, Known Not Affected 1.	https://www.suse.com/security/cve/CVE-2025-14087/
`ubuntu`	medium	CVE-2025-14087 medium priority: Ubuntu including 1 source packages (glib2.0), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): released 9.	https://ubuntu.com/security/CVE-2025-14087

Affected software / configurations for CVE-2025-14087

Vendor	Product	Version	Raw CPE
gnome	glib	< 2.86.3	cpe:2.3:a:gnome:glib::::::::
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
redhat	enterprise_linux	9.0	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
redhat	enterprise_linux	10.0	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

References for CVE-2025-14087

URL	Tags
https://access.redhat.com/errata/RHSA-2026:15953
https://access.redhat.com/errata/RHSA-2026:15969
https://access.redhat.com/errata/RHSA-2026:15971
https://access.redhat.com/errata/RHSA-2026:19148
https://access.redhat.com/errata/RHSA-2026:19361
https://access.redhat.com/errata/RHSA-2026:19452
https://access.redhat.com/errata/RHSA-2026:19457
https://access.redhat.com/errata/RHSA-2026:19459
https://access.redhat.com/errata/RHSA-2026:19460
https://access.redhat.com/errata/RHSA-2026:19523
https://access.redhat.com/errata/RHSA-2026:19524
https://access.redhat.com/errata/RHSA-2026:19565
https://access.redhat.com/errata/RHSA-2026:19566
https://access.redhat.com/errata/RHSA-2026:19567
https://access.redhat.com/errata/RHSA-2026:21275
https://access.redhat.com/errata/RHSA-2026:22634
https://access.redhat.com/errata/RHSA-2026:7461
https://access.redhat.com/security/cve/CVE-2025-14087	Mitigation Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2419093	Issue Tracking Third Party Advisory
https://gitlab.gnome.org/GNOME/glib/-/issues/3834

URL

CVE-2025-14087 | Glib: glib: buffer underflow in gvariant parser leads to heap corruption

Exploit prediction scoring system (EPSS) score for CVE-2025-14087

Common vulnerability scoring system (CVSS) metrics for CVE-2025-14087

Weakness enumeration for CVE-2025-14087

GitHub Security Advisory for CVE-2025-14087

OS Trackers for CVE-2025-14087

Affected software / configurations for CVE-2025-14087

References for CVE-2025-14087