What is the CVSS score of CVE-2025-59362?

CVE-2025-59362 has a CVSS 3.1 base score of 4.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.2%.

Is there a public PoC exploit available for CVE-2025-59362?

Yes, a public proof-of-concept exploit is available for CVE-2025-59362. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-59362?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Vendor patch is available.

Squid CVE-2025-59362

MEDIUM

Stack-based Buffer Overflow (CWE-121)

2025-09-26 cve@mitre.org

Buffer Overflow Stack Overflow Red Hat Suse Squid Squid Cache

4.0

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-121 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Stack buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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	CVSS score of 4.0 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.18%.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

Monitor Track and reassess. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Squid through 7.1 mishandles ASN.1 encoding of long SNMP OIDs. Rated medium severity (CVSS 4.0), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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

This vulnerability is classified under CWE-121. Squid through 7.1 mishandles ASN.1 encoding of long SNMP OIDs. This occurs in asn_build_objid in lib/snmplib/asn1.c. Affected products include: Squid-Cache Squid. Version information: through 7.1.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.0 MEDIUM

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

SUSE 7.5 HIGH

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

Red Hat 5.3 MEDIUM

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Patch released

Mar 28, 2026 - 19:14 nvd

Patch available

PoC Detected

Oct 07, 2025 - 18:50 vuln.today

Public exploit code

CVE Published

Sep 26, 2025 - 16:15 nvd

MEDIUM 4.0

DescriptionCVE.org

Squid through 7.1 mishandles ASN.1 encoding of long SNMP OIDs. This occurs in asn_build_objid in lib/snmplib/asn1.c.

Executive ViewAI

Why It Matters

CVE-2025-59362 presents moderate security risk, a stack-based buffer overflow vulnerability rated CVSS 4.0. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.

Business Impact: Low

Compensating Controls

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

Threat Intelligence Overview

EPSS Score

0.2%

Top 60% exploitable

Exploit

POC

Public exploit code exists

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 0.2%

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: +20

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Affected Products (CPE)CVE.org

cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

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client_side_request.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of servi

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8.2 Apr 07

Heap-based buffer overflow in the Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and

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client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of

CVE-2013-4115 HIGH Act Now

7.5 Aug 09

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows

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8.6 May 10

mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly c

CVE-2014-7141 MEDIUM This Month

6.4 Nov 26

The pinger in Squid 3.x before 3.4.8 allows remote attackers to obtain sensitive information or cause a denial of servic

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5.0 Sep 11

HttpHdrRange.cc in Squid 3.x before 3.3.12 and 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (

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7.5 Apr 07

Squid 3.x before 3.5.16 and 4.x before 4.0.8 improperly perform bounds checking, which allows remote attackers to cause

Same weakness CWE-121 – Stack-based Buffer Overflow

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9.3

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CVE-2012-10023 MEDIUM POC

6.9

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10.0

CVE-2013-10068 CRITICAL POC

9.4

Same technique Buffer Overflow

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CVE-2017-7269 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

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CVE-2015-3113 CRITICAL POC

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CVE-2011-2462 CRITICAL POC

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CVE-2020-0796 CRITICAL POC

10.0

CVE-2019-11043 CRITICAL POC

9.8

CVE-2009-0927 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

Vendor StatusVendor

SUSE

Severity: High

Product	Status
Container suse/multi-linux-manager/5.1/x86_64/proxy-squid:5.1.2.8.13.1 Image proxy-squid-image	Affected
Image SLES15-SP4-Manager-Proxy-4-3-BYOS Image SLES15-SP4-Manager-Proxy-4-3-BYOS-Azure Image SLES15-SP4-Manager-Proxy-4-3-BYOS-EC2 Image SLES15-SP4-Manager-Proxy-4-3-BYOS-GCE	Affected
SUSE Enterprise Storage 7.1	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS	Fixed

References

Advisories & patches

PATCH https://github.com/squid-cache/squid/pull/2149 ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03521/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03606/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03607/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03627/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:20078/

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