Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary c
Affects Microsoft Silverlight 5 and Silverlight 5 Developer Runtime builds before 5.1.41212.0 on Mac or supported Windows clients and servers. Fixed in build 5.1.41212.0.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 5.1.41212.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Microsoft Silverlight 5 is affected by this vulnerability. A remote attacker could exploit it by tricking a user into visiting a crafted website, allowing arbitrary code execution or causing the software to crash.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."
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
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a n/a
Version range not reported
References 2
securitytracker.com
docs.microsoft.com
Questions about CVE-2016-0034
What does this mean?
Silverlight mishandles negative offsets during decoding. A remote attacker could run arbitrary code with the same permissions as the logged-on user, with full control if that user has administrative rights. Denial of service is also possible.Source: learn.microsoft.com
Am I affected, and how do I check?
Silverlight 5 and Silverlight 5 Developer Runtime builds before 5.1.41212.0 are affected, on Mac or on supported Windows clients or servers. Compare the installed Silverlight build number with 5.1.41212.0.Source: learn.microsoft.com
What should I do about it?
Install Silverlight build 5.1.41212.0 or later. That build was the current release when the bulletin was first published and addresses the vulnerabilities.Source: learn.microsoft.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-05-25, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data