HIGH
CVE-2020-8177
CWE-99Published: December 14, 2020· Updated: Jun 17, 2026
7.8
CVSS v3.1
Official Description
curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a local file when the -J flag is used.
Technical Analysis
CVE-2020-8177 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Debian1 product(s)
debian linux
fujitsu12 product(s)
m10-1 firmwarem10-1m10-4 firmwarem10-4m10-4s firmwarem10-4sm12-1 firmwarem12-1m12-2 firmwarem12-2m12-2s firmwarem12-2s
haxx1 product(s)
curl
siemens1 product(s)
sinec infrastructure network services
splunk1 product(s)
universal forwarder
Source: NVD CPE · 17 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch · Third Party Advisory
→
https://curl.se/docs/CVE-2020-8177.htmlVendor Advisory
→
https://hackerone.com/reports/887462Exploit · Third Party Advisory
→
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
→
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch · Third Party Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch · Third Party Advisory
→
https://curl.se/docs/CVE-2020-8177.htmlVendor Advisory
→
https://hackerone.com/reports/887462Exploit · Third Party Advisory
→
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
→
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch · Third Party Advisory
Quick Facts
CVE IDCVE-2020-8177
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-99
CISA KEVNo
Affected5 vendor(s)
PublishedDec 14, 2020
Related CVEs (CWE-99)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-8177 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.