What is the CVSS score of CVE-2025-6196?

CVE-2025-6196 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2025-6196?

Yes, a public proof-of-concept exploit is available for CVE-2025-6196. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-6196?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Libgepub CVE-2025-6196

EUVD-2025-18504 MEDIUM

Integer Overflow or Wraparound (CWE-190)

2025-06-17 secalert@redhat.com

Denial Of Service Integer Overflow Debian Ubuntu Red Hat Libgepub Suse Gnome

5.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-190 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Integer overflow checks MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	Can lead to buffer overflows, incorrect security checks, or unexpected behavior that may be exploitable for code execution. With a CVSS score of 5.5 (MEDIUM), this represents a moderate risk.
Exploit ScenarioDerived	An attacker provides a large numeric value that, when processed, wraps around to a small value, causing an undersized buffer allocation followed by an overflow.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 22:15 CVSS 5.5

RemediationAI

Use safe integer arithmetic libraries. Check for overflow conditions before operations. Use appropriately sized integer types.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

An integer overflow occurs when an arithmetic operation produces a value that exceeds the maximum (or minimum) size of the integer type used to store it. This vulnerability is classified as Integer Overflow or Wraparound (CWE-190).

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM

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

Ubuntu MEDIUM

SUSE MEDIUM

Red Hat 5.5 MEDIUM

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

PoC Detected

Aug 12, 2025 - 12:48 vuln.today

Public exploit code

CVE Published

Jun 17, 2025 - 15:15 nvd

MEDIUM 5.5

Executive ViewAI

Why It Matters

Organizations using A flaw should be aware of moderate risk from CVE-2025-6196, a integer overflow vulnerability rated CVSS 5.5. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score

0.0%

Top 92% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS Vendor

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +28

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Integer Overflow MEDIUM

Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:gnome:libgepub:-:*:*:*:*:*:*:*

Same weakness CWE-190 – Integer Overflow or Wraparound

View all

CVE-2013-2729 CRITICAL POC

9.8

CVE-2015-8651 HIGH

8.8

CVE-2012-5054 HIGH POC

8.8

CVE-2014-0569 CRITICAL POC

9.3

CVE-2023-21716 CRITICAL POC

9.8

CVE-2017-3599 HIGH POC

7.5

CVE-2026-97229 CRITICAL POC

10.0

CVE-2017-7529 HIGH

7.5

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

Vendor StatusVendor

Ubuntu

Priority: Medium

libgepub

Release	Status	Version
bionic	needs-triage	-
focal	needs-triage	-
jammy	needs-triage	-
noble	needs-triage	-
plucky	not-affected	0.7.3-1
upstream	released	0.7.3-1
oracular	ignored	end of life, was needs-triage
questing	not-affected	-

Debian

libgepub

Release	Status	Fixed Version	Urgency
bullseye	vulnerable	0.6.0-2	-
bookworm	vulnerable	0.7.0-2	-
trixie	fixed	0.7.3-1	-
forky, sid	fixed	0.7.3-2	-
(unstable)	fixed	0.7.3-1	-

SUSE

Severity: Medium

Product	Status
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7	Fixed
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7	Fixed
openSUSE Leap 15.6	Fixed

References

Advisories & patches

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-6196 ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02213/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02222/ REF https://access.redhat.com/security/cve/CVE-2025-6196 REF https://bugzilla.redhat.com/show_bug.cgi?id=2373117

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back

SUSE Linux Enterprise Desktop 15	Fixed
SUSE Linux Enterprise Desktop 15 SP1	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP4	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
SUSE Linux Enterprise Server 15	Fixed
SUSE Linux Enterprise Server 15 SP1	Fixed
SUSE Linux Enterprise Server for SAP Applications 15	Fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP1	Fixed
SUSE Linux Enterprise Workstation Extension 15	Fixed
SUSE Linux Enterprise Workstation Extension 15 SP1	Fixed
openSUSE Leap 15.3	Fixed
openSUSE Leap 15.4	Fixed
openSUSE Leap 15.5	Fixed