NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 43.56, 58.32
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 on Exploit-DB
- Exploitation: active
- Automatable: yes
- Technical impact: total
Summary
NetScaler ADC and NetScaler Gateway appliances are affected when configured as a Gateway (including VPN virtual server, ICA Proxy, CVPN, or RDP Proxy) or as an AAA virtual server. The flaw is a failure to properly validate input, which can cause the device to read beyond the intended memory boundaries, potentially exposing sensitive information or causing unexpected behavior.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Public exploit on Exploit-DB
EDB-52401
- CISA SSVC assessment
Exploitation: active · Automatable: yes · Technical impact: total
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- NetScaler ADC
From 14.1 · fixed in 43.56; From 13.1 · fixed in 58.32
- NetScaler Gateway
From 14.1 · fixed in 43.56; From 13.1 · fixed in 58.32