Microsoft Visual Studio is widely used; network-accessible RCE on developer hosts risks codebase compromise and supply-chain impact across organizations.
CVE-2026-69522
Heap-based buffer overflow in Visual Studio enabling remote code execution.
Is CVE-2026-69522 being exploited?
Not confirmed. CVE-2026-69522 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.80% probability of exploitation in the next 30 days.
How severe is CVE-2026-69522?
CVE-2026-69522 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-69522?
Yes. A fix has been recorded for CVE-2026-69522. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-69522 affect?
CVE-2026-69522 affects Microsoft Visual Studio (unspecified versions), Developer workstations. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-69522?
Install Microsoft's security update immediately; isolate or limit Visual Studio network access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via heap overflow in Visual Studio; attacker can execute arbitrary code on developer machines over the network.
Immediate action required
- affected>= 3.0.0.0 and < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0
- affected>= 4.7.0 and < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0
- affected>= 4.8.0 and < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0
- affected>= 4.8.1 and < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
- affected>= 4.7.0 and < 4.7.4145.0
- affected>= 4.8.0 and < 4.8.4806.0
- affected>= 4.8.0.0 and < 4.8.9347.0
- affected>= 17.14.0 and < 17.14.40
- affected>= 18.9.0 and < 18.9.3
- affected>= 10.0.0 and < 10.0.12
- affected>= 11.0.0 and < 11.0 RC1
- affected>= 8.0.0 and < 8.0.31
- affected>= 9.0.0 and < 9.0.20
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.