CVE-2025-59596 is a denial-of-service vulnerability in Secure Access Windows client versions 12.0 to 14.10 that is addressed in version 14
CVE-2025-59596 is a denial-of-service vulnerability in Secure Access Windows client versions 12.0 to 14.10 that is addressed in version 14.12. If a local networking policy is active, attackers on an adjacent network may be able to send a crafted packet and cause the client system to crash.
- Published
- Nov 4, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 12th percentile
- CWE
- CWE-20
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 24 / 40 · 6.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Absolute
- 6.0
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| absolute | secure access | cpe:2.3:a:absolute:secure_access |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- absolute secure access12.00 and later · before 14.12
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Absolute). Independent of NVD's CPE analysis and usually ahead of it.
Absolute Security Secure Access
- 12.0 and later · before 14.12affected · Client
Same product
absolute: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-55402CVE-2026-55402 is an out of bounds read vulnerability in Secure Access
servers prior to version 14.57.34Monitor
- CVE-2026-33445Memory management vulnerability in Secure Access servers34Monitor
- CVE-2026-40952Privilge misconfiguration in Secure Access installers34Monitor
- CVE-2026-33451Arbitrary read/write vulnerability in Windows clients prior to 14.5034Monitor
- CVE-2025-49080Memory management vulnerability in Absolute Secure Access server versions 9.0 to 13.5434Monitor
- CVE-2025-59595CVE-2025-59595 is an internally discovered denial of service
vulnerability in versions of Secure Access prior to 14.12.32Monitor
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 |
|---|---|---|
| Absolute Security Secure Access | 14.12 | Vendor (CNA) |
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.
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 researchersFinders, 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-2025-595950 days apartCVE-2025-59595 is an internally discovered denial of service
vulnerability in versions of Secure Access prior to 14.12.32Monitor
- CVE-2025-49081145 days apartInput validation vulnerability in the Secure Access prior to version 13.5527Monitor
- CVE-2024-37346502 days apartInsufficient input validation vulnerability in the Absolute Secure Access Warehouse prior to 13.0619Monitor
- CVE-2026-40958253 days apartInput validation error in Secure Access clients prior to 14.559Monitor
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).
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
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)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.