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CVE-2024-29059

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in Microsoft .NET Framework. For every flaw being used in attacks, see Exploited flaws; for Microsoft’s, see Microsoft flaws being used in attacks.

CVE-2024-29059 is a security flaw in Microsoft .NET Framework, the framework many Windows apps are built on. Attackers can run their own code on Microsoft .NET Framework. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 4 Feb 2025.[1]

Microsoft .NET Framework is in things households have, such as phones, computers, browsers and everyday apps, so the fix matters at home as much as at work. Fixed in version 4.8.04690.02, 4.7.04081.03, 4.8.09214.01 and 10.0.10240.20402 and others.

Description

CISA calls it an information disclosure in Microsoft .NET Framework. In its words: “Microsoft .NET Framework contains an information disclosure vulnerability that exposes the ObjRef URI to an attacker, ultimately enabling remote code execution.”[1]

The underlying weakness is CWE-209, in MITRE’s list of common software weaknesses.[2]

It scores 7.5 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by the organisation that published the CVE using CVSS 3.1.[2]

Affected versions

NVD’s record lists these fixed versions: in each line, everything before the version shown is affected.[2]

ProductFixed in
Microsoft .NET Framework 4.84.8.04690.02
Microsoft .NET Framework 3.5 AND 4.84.8.04690.02
Microsoft .NET Framework 3.5 AND 4.7.24.7.04081.03
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.24.7.04081.03
Microsoft .NET Framework 3.5 AND 4.8.14.8.09214.01
Microsoft .NET Framework 4.6.24.7.04081.03
Microsoft .NET Framework 3.5 AND 4.6/4.6.210.0.10240.20402
Microsoft .NET Framework 2.0 Service Pack 23.0.50727.8976

Every device with Microsoft .NET Framework needs the update.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 4 Feb 2025, 318 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 25 Feb 2025 to fix it.[1]

FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 99%. That’s in the top 1% of the flaws it scores.[4]

CISA assesses it as automatable: attackers can run it against many targets at once.

CISA doesn’t say who was attacked, or how.

Fix

Microsoft has published a fix or advice.[3] CISA’s required action: “Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.”[1]

  1. Update Microsoft .NET Framework now.Install the latest update from Microsoft on every device that has it, and restart when asked. Then turn on automatic updates, so the next fix arrives on its own.
  2. Check you’re on 4.8.04690.02 or later.Fixed in version 4.8.04690.02, 4.7.04081.03, 4.8.09214.01 and 10.0.10240.20402 and others. Anything older is what attackers are going after.
  3. If there’s no update, stop using it.CISA’s advice when a flaw being used in attacks has no fix is to stop using the product until it does.

Timeline

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 7.5.[2]
CISA adds it to its catalog of flaws known to be used in attacks.[1]
CISA’s deadline for US government agencies to fix it.[1]
FIRST puts the odds of it being used in attacks in the next 30 days at 99%.[4]

See also

Other Microsoft .NET Framework flaws

Other Microsoft flaws

  • CVE-2026-96951, Microsoft Windows: command injection ·
  • CVE-2026-65660, Microsoft SharePoint: code injection ·
  • CVE-2026-85880, Microsoft Windows: heap-based buffer overflow ·
  • CVE-2026-81963, Microsoft Windows: link following ·
  • CVE-2019-1068, Microsoft SQL Server: remote code execution ·

Similar flaws

  • CVE-2025-47813, Wing FTP Server: information disclosure ·

Added the same day

  • CVE-2024-45195, Apache OFBiz: forced browsing ·
  • CVE-2018-9276, Paessler PRTG Network Monitor: OS command injection ·
  • CVE-2018-19410, Paessler PRTG Network Monitor: local file inclusion ·

Every Microsoft flaw on CISA’s list · Everything added in February 2025

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “Microsoft .NET Framework Information Disclosure Vulnerability”. Known Exploited Vulnerabilities Catalog, added 4 Feb 2025.
  2. ^ National Institute of Standards and Technology. “CVE-2024-29059 Detail”. National Vulnerability Database, published 23 Mar 2024.
  3. ^ Microsoft. Advisories and fixes: msrc.microsoft.com.
  4. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.986, percentile 99.9, 31 Oct 2026.
  5. CVE Program. “CVE-2024-29059”. The official CVE record.

This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.