Out-of-bounds Read in FreeRDP
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.
- Published
- May 7, 2020
- Updated
- Jun 16, 2026
- EPSS
- 1.7% · 77th percentile
- CWE
- CWE-125
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.7%
CNA vs NVD score
- NVD
- 5.9
- CNA · GitHub_M
- 5.5
- 0.4 point gap
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| freerdp | freerdp | cpe:2.3:a:freerdp:freerdp |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux18.04
- canonical ubuntu linux19.10
- canonical ubuntu linux20.04
- debian debian linux10.0
- freerdp freerdpafter 1.1.0 · before 2.0.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.
FreeRDP FreeRDP
- > 1.1, < 2.0.0affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | freerdp-devel | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| AlmaLinux:8 | vinagre | before 3.22.0-23.el8 | 3.22.0-23.el8 |
| Debian:10 | freerdp2 | before 2.3.0+dfsg1-2+deb10u3 | 2.3.0+dfsg1-2+deb10u3 |
| Debian:12 | freerdp2 | before 2.1.1+dfsg1-1 | 2.1.1+dfsg1-1 |
| Red Hat:enterprise_linux:7::client | freerdp | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:7::client | freerdp-debuginfo | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:7::client | freerdp-devel | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:7::client | freerdp-libs | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:7::client | libwinpr | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:7::client | libwinpr-devel | before 0:2.1.1-2.el7 | 0:2.1.1-2.el7 |
| Red Hat:enterprise_linux:8::appstream | freerdp | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | freerdp-debuginfo | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | freerdp-debugsource | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | freerdp-libs | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | freerdp-libs-debuginfo | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | libwinpr | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | libwinpr-debuginfo | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | libwinpr-devel | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Red Hat:enterprise_linux:8::appstream | vinagre | before 0:3.22.0-23.el8 | 0:3.22.0-23.el8 |
| Red Hat:enterprise_linux:8::appstream | vinagre-debuginfo | before 0:3.22.0-23.el8 | 0:3.22.0-23.el8 |
| Red Hat:enterprise_linux:8::appstream | vinagre-debugsource | before 0:3.22.0-23.el8 | 0:3.22.0-23.el8 |
| Red Hat:enterprise_linux:8::crb | freerdp-devel | before 2:2.1.1-1.el8 | 2:2.1.1-1.el8 |
| Rocky Linux:8 | vinagre | before 0:3.22.0-23.el8 | 0:3.22.0-23.el8 |
Same product
freerdp: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-8787FreeRDP prior to version 2.0.0-rc4 contains an Integer Overflow that leads to a Heap-Based Buffer Overflow in function gdi_Bitmap_Decompress42Plan
- CVE-2018-8788FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory co41Plan
- CVE-2018-8786FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function update_read_bitmap_41Plan
- CVE-2018-8785FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress() that results in a memory corruption a41Plan
- CVE-2018-8784FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corr41Plan
- CVE-2024-32460FreeRDP Out-Of-Bounds Read in interleaved_decompress40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| FreeRDP FreeRDP | 2.0.0 · description | Vendor (CNA) |
| almalinux:freerdp-devel | 2:2.1.1-1.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:vinagre | 3.22.0-23.el8 · AlmaLinux:8 | Package registry (OSV) |
| debian:freerdp2 | 2.1.1+dfsg1-1 · Debian:12 | Package registry (OSV) |
| red hat:freerdp | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-debuginfo | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-debugsource | 2:2.1.1-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:freerdp-devel | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-libs | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-libs-debuginfo | 2:2.1.1-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libwinpr | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:libwinpr-debuginfo | 2:2.1.1-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libwinpr-devel | 0:2.1.1-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:vinagre | 0:3.22.0-23.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:vinagre-debuginfo | 0:3.22.0-23.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:vinagre-debugsource | 0:3.22.0-23.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:vinagre | 0:3.22.0-23.el8 · Rocky Linux:8 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/FreeRDP/FreeRDP/commit/f5e73cc7c9cd973b516a618da877c87b80950b65
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9fw6-m2q8-h5pw
- lists.debian.org/debian-lts-announce/2023/10/msg00008.html
- usn.ubuntu.com/4379-1/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.