What is CVE-2025-7775?

CVE-2025-7775 is Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service. The supplied enrichment data classifies it as Memory Corruption mapped to CWE-119 Improper Restriction of Operations within a Memory Buffer.

Which versions are affected?

Affected product and version evidence is listed in the product table above. Current public advisories should be checked for exact version scope before patch targeting is finalized.

Is there active exploitation?

Yes: CISA KEV signal present. If exploitation is not confirmed from current sources, teams should document that status and continue monitoring KEV, vendor, and telemetry updates.

Is there a public exploit?

8 public PoC repositories reported; 0 marked weaponized in current dataset. Public exploit or PoC availability should raise triage priority, especially for exposed or business-critical systems.

How can defenders detect it?

Start with web/proxy/WAF logs, application logs, network IDS/IPS where available. Look for vulnerability-class behavior, product errors, suspicious authentication events, exploit probes, and abnormal process activity based only on evidence that applies to the affected product.

How should teams prioritize it?

Prioritize CVE-2025-7775 using CVSS 9.8, EPSS 20%, KEV status, public PoC status, and asset exposure. Internet-facing, privileged, or business-critical deployments should be handled first.

Are workarounds available?

The supplied mitigation guidance says to apply vendor patches and restrict external exposure until fixed. Fixed-version evidence is listed in the mitigation section above.

Which threat actors are linked publicly?

Publicly linked actor or ransomware signals in the supplied enrichment data: Void Rabisu (), RomCom (), Lazarus Group (), GhostEmperor (), Silent Crow (). Do not attribute exploitation to a threat actor unless the source evidence explicitly supports that linkage.

What should be done in the next 24 hours?

Identify exposed assets running affected vendor/product/version combinations. Treat as emergency remediation because CISA KEV status is present. Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class. Open remediation tickets with affected assets, owners, evidence status, and detection coverage so decisions are traceable.

CISA KEVcriticalMemory Corruptionpublic exploit

CVE-2025-7775

CVE-2025-7775 — Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service

Q: Is it in CISA KEV?

Yes. The supplied enrichment data lists CVE-2025-7775 in CISA KEV with required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.. KEV status should be monitored because it can change after initial disclosure or after exploitation becomes publicly confirmed.

Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or servicegroups bound with IPv6 servers (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with DBS IPv6 services or servicegroups bound with IPv6 DBS servers (OR) CR virtual server with type HDX

Published Aug 26, 2025Updated Jun 17, 2026Sources: NVD, NetScaler (CNA), CISA, FIRST EPSS, SOCRadar CTI

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Confirmed

CISA KEV, listed Aug 26, 2025

EPSS

20%

ahead of 97% of scored CVEs

Affects

NetScaler

8 products listed

CVSS base

9.8

critical · 2 sources

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

The vendor's own words where we have them.

Upgrade ADC to a fixed release. Apply vendor patches per advisory and restrict external exposure of the affected component until patched.

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Federal deadline Aug 28, 2025 — passed 389 days ago

First 24 hours

Ordered from the record's own fields — exposure first, because you cannot patch what you have not found.

Identify exposed assets running affected vendor/product/version combinations.
Treat as emergency remediation because CISA KEV status is present.
Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class.

Affected scope

Vendor, product and version as the advisories word them.

Vendor	Product	Versions	Status
NetScaler	ADC	14.1 to < 47.48	Vulnerable
NetScaler	ADC	13.1 to < 59.22	Vulnerable
NetScaler	ADC	13.1 FIPS and NDcPP to < 37.241	Vulnerable
NetScaler	ADC	12.1 FIPS and NDcPP to < 55.330	Vulnerable
NetScaler	Gateway	14.1 to < 47.48	Vulnerable
NetScaler	Gateway	13.1 to < 59.22	Vulnerable
NetScaler	Gateway	13.1 FIPS and NDcPP to < 37.241	Vulnerable
NetScaler	Gateway	12.1 FIPS and NDcPP to < 55.330	Vulnerable

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Availability

High

Confidentiality

High

Integrity

High

Scope

Unchanged

Attack Complexity

Low

Attack Vector

Network

Privileges Req

None

User Interaction

None

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
9.8	CVSS 3.1	critical	3.9	5.9	NVD
9.2	CVSS 4.0	critical	—	—	NetScaler (CNA)

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

What this weakness leads to

MITRE's own consequences and mitigations for the weakness class — the authority's wording, not guidance derived from the CVSS vector.

MITRE

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

Execute Unauthorized Code or Commands
Modify Memory
Read Memory
DoS: Crash, Exit, or Restart

Mitigation: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.

Weakness & attack patterns

CWE-119Improper Restriction of Operations within a Memory Buffer

Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.

CAPEC-14 · Client-side Injection-induced Buffer OverflowCAPEC-9 · Buffer Overflow in Local Command-Line UtilitiesCAPEC-45 · Buffer Overflow via Symbolic LinksCAPEC-46 · Overflow Variables and TagsCAPEC-123 · Buffer ManipulationCAPEC-100 · Overflow BuffersCAPEC-8 · Buffer Overflow in an API CallCAPEC-24 · Filter Failure through Buffer OverflowCAPEC-10 · Buffer Overflow via Environment VariablesCAPEC-47 · Buffer Overflow via Parameter ExpansionCAPEC-44 · Overflow Binary Resource FileCAPEC-42 · MIME Conversion

CISA KEV details

CISA lists a CVE here once it has evidence of exploitation against real targets.

CISAThat month →

Listed

Aug 26, 2025

Federal deadline

Aug 28, 2025

passed 389 days ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a date to argue against.

Public exploit

Capability, not use: code existing is a different claim from anyone running it.

Repositories

Exploit entries

Exploit-DB and CTI exploit indexes

Malware

Families a CTI source ties to this CVE. One named, with the total it tracks.

Families tracked

Named

AMOS

AMOS, Atomic macOS Stealer, amos

Social mentions

Posts naming this CVE. Attention, not evidence of exploitation — it spikes on disclosure and decays whether or not anything is exploited.

34 more posts on this CVEShowing 5 of 39 · Who is discussing this CVE, and how loudlyUnlock free

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

Search application, proxy, and WAF logs for requests touching /or.
Prioritize edge telemetry for network-reachable ADC, Gateway.
Monitor for scanner or exploit-pattern traffic after 8 public PoC repositories were reported.

web/proxy/WAF logsapplication logsnetwork IDS/IPS

Groups associated with this CVE

Groups reported in connection with this vulnerability. A reported association, not a confirmed observation of that group using it — and not scoped to any sector or campaign.

Void RabisuRomComLazarus GroupGhostEmperorSilent Crow

16 more threat groups on this CVEShowing 5 of 21 · Attribution, campaigns and the malware each one runsUnlock free

hostnamesrlaptop.com72
Threatview.io Feeds · Aug 14, 2025
hostnamecampanole.com72
Threatview.io Feeds · Aug 14, 2025
hostnamegohazeldale.com59
Threatview.io Feeds · Aug 14, 2025
hostnamemelamorri.com74
Threatview.io Feeds · Aug 14, 2025
hashe0cbe8f18315a2ee781de48565dc8a087a1564557c42c66067f65c267120c89499
AlienVault OTX Feeds · Aug 19, 2025

5 more indicators on this CVEShowing 5 of 10 · Hashes, addresses and domains from a live threat exchangeUnlock free

Timeline

What happened to this CVE, newest first — with the readings a source repeats on a schedule counted underneath rather than listed.

2026
Added · CVSS 3.1 9.8 (AV:N)
Jun 17, 2026 · NVD
Cve is exploited swabird/CVE-2025-7775-PoC
Jun 9, 2026 · SOCRadar CTI
2025
Added to CISA KEV catalog
Aug 26, 2025 · CISA
Initial · CVE published
Aug 26, 2025 · NVD

Source activity

Readings a source repeats on a schedule, counted rather than listed.

15×SVRS was changedSep 23, 2025 – Jun 9, 2026 · SOCRadar CTI
7×TweetsSep 25, 2025 – Aug 9, 2026 · SOCRadar CTI
4×CVE modified by MITRE: CVSS metrics updated.Oct 21, 2025 – Oct 24, 2025 · SOCRadar CTI
2×1 time mentioned on 1 Telegram channelOct 11, 2025 – Oct 19, 2025 · SOCRadar CTI

References

3 on the record

support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938
Vendor Advisory, NIST
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-7775
US Government Resource
nvd.nist.gov/vuln/detail/CVE-2025-7775
Vendor Advisory

Coverage

14 stories from the feeds we poll

9 more reports on this CVEShowing 5 of 14 · Vendor research and security press coverageUnlock free

Elsewhere on this site

NetScalerevery CVE for this vendor
August 2025what else CISA listed
Memory Corruptionsame class
CWE-119other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

Only the 5 indicator(s) reported for this CVE are available; no packet-level or host-forensic artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record1

What should defenders know first?

CVE-2025-7775 is Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service, a critical vulnerability affecting ADC, Gateway from NetScaler. The current evidence lists it in CISA KEV, and the exploit status is: Yes: CISA KEV signal present. Public exploit evidence is: 8 public PoC repositories reported; 0 marked weaponized in current dataset. The affected-version evidence is listed in the key facts and affected products tables. Defenders should first verify whether exposed or business-critical assets run those versions, then apply vendor patches or mitigations, restrict reachable attack surface, and preserve logs for detection review. CVSS 9.8 describes technical severity, while EPSS 20% helps estimate near-term exploit likelihood; neither replaces asset context. Unknown fields should remain explicit in tickets, and threat actor, IOC, victimology, or payload claims should not be added unless a cited source supports them. Monitor CISA KEV, vendor advisories, NVD changes, public PoC repositories, and internal telemetry for update triggers.