CVE-2018-8788: FreeRDP 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…
Noroxi assessment
Priority: Plan (action score 41/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 7.4% (FIRST EPSS); higher than 94.5% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: freerdp (Alpine:v3.10) 2.0.0_rc4-r0; freerdp2 (Alpine:v3.22) 2.0.0_rc4-r0; freerdp2 (Debian:12) 2.0.0~git20181120.1.e21b72c95+dfsg1-1.
Add it to your regular patch cycle. Upgrade to freerdp (Alpine:v3.10) 2.0.0_rc4-r0; freerdp2 (Alpine:v3.22) 2.0.0_rc4-r0; freerdp2 (Debian:12) 2.0.0~git20181120.1.e21b72c95+dfsg1-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
FreeRDP 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 corruption and possibly even a remote code execution.
- Published
- Nov 29, 2018
- Updated
- Jun 16, 2026
- EPSS
- 7.4% · 94th percentile
- CWE
- CWE-787
Report tools
Action score
41
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.4%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| 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 |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (checkpoint). Independent of NVD's CPE analysis and usually ahead of it.
Check Point Software Technologies Ltd. FreeRDP
- All versions prior to 2.0.0-rc4affected
Affected versions · NVD (7)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- canonical ubuntu linux18.10
- debian debian linux8.0
- freerdp freerdpup to 1.2.0 inclusive
- freerdp freerdp2.0.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | freerdp | before 2.0.0_rc4-r0 | 2.0.0_rc4-r0 |
| Alpine:v3.22 | freerdp2 | before 2.0.0_rc4-r0 | 2.0.0_rc4-r0 |
| Debian:12 | freerdp2 | before 2.0.0~git20181120.1.e21b72c95+dfsg1-1 | 2.0.0~git20181120.1.e21b72c95+dfsg1-1 |
| Debian:8 | freerdp | before 1.1.0~git20140921.1.440916e+dfsg1-13~deb8u3 | 1.1.0~git20140921.1.440916e+dfsg1-13~deb8u3 |
| openSUSE:Tumbleweed | freerdp2 | before 2.4.0-2.1 | 2.4.0-2.1 |
| Red Hat:enterprise_linux:7::client | freerdp | before 0:1.0.2-15.el7_6.1 | 0:1.0.2-15.el7_6.1 |
| Red Hat:enterprise_linux:7::client | freerdp-debuginfo | before 0:1.0.2-15.el7_6.1 | 0:1.0.2-15.el7_6.1 |
| Red Hat:enterprise_linux:7::client | freerdp-devel | before 0:1.0.2-15.el7_6.1 | 0:1.0.2-15.el7_6.1 |
| Red Hat:enterprise_linux:7::client | freerdp-libs | before 0:1.0.2-15.el7_6.1 | 0:1.0.2-15.el7_6.1 |
| Red Hat:enterprise_linux:7::client | freerdp-plugins | before 0:1.0.2-15.el7_6.1 | 0:1.0.2-15.el7_6.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | freerdp | before 2.0.0~git.1463131968.4e66df7-12.8.1 | 2.0.0~git.1463131968.4e66df7-12.8.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | freerdp | before 2.1.2-12.20.1 | 2.1.2-12.20.1 |
| SUSE:Linux Enterprise Workstation Extension 12 SP5 | vinagre | before 3.20.2-16.3.3 | 3.20.2-16.3.3 |
| SUSE:Linux Enterprise Workstation Extension 15 | freerdp | before 2.0.0~rc4-3.3.1 | 2.0.0~rc4-3.3.1 |
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…42Plan
- CVE-2018-8786FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function…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…41Plan
Published before and after this one in the same product
- ← EarlierCVE-2017-2839Apr 24, 2018 · An exploitable denial of service vulnerability exists within the handling of challenge packets in FreeRDP 2.0.0-beta1+android11.23Monitor
- ← EarlierCVE-2018-8784Nov 29, 2018 · FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory…41Plan
- Later →CVE-2018-8789Nov 29, 2018 · FreeRDP prior to version 2.0.0-rc4 contains several Out-Of-Bounds Reads in the NTLM Authentication module that results in a Denial of…32Monitor
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 |
|---|---|---|
| alpine:freerdp | 2.0.0_rc4-r0 · Alpine:v3.10 | Package registry (OSV) |
| alpine:freerdp2 | 2.0.0_rc4-r0 · Alpine:v3.22 | Package registry (OSV) |
| debian:freerdp | 1.1.0~git20140921.1.440916e+dfsg1-13~deb8u3 · Debian:8 | Package registry (OSV) |
| debian:freerdp2 | 2.0.0~git20181120.1.e21b72c95+dfsg1-1 · Debian:12 | Package registry (OSV) |
| opensuse:freerdp2 | 2.4.0-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:freerdp | 0:1.0.2-15.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-debuginfo | 0:1.0.2-15.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-devel | 0:1.0.2-15.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-libs | 0:1.0.2-15.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:freerdp-plugins | 0:1.0.2-15.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:freerdp | 2.0.0~git.1463131968.4e66df7-12.8.1 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
| suse:vinagre | 3.20.2-16.3.3 · SUSE:Linux Enterprise Workstation Extension 12 SP5 | 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.
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (5 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.