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Fencer Vulns
high 7.8

CVE-2020-15778 in the critical feed json

scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destina…

published 2020-07-24 6 y ago modified 2026-10-14 26 d ago also EUVD-2020-7762

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
13.7%
EPSS 13.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."

Patch / fix

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • openssh RHEL 8 8.0p1-24.el8
  • openssh-cavs RHEL 8 8.0p1-24.el8
  • openssh-ldap RHEL 8 8.0p1-24.el8
  • openssh-keycat RHEL 8 8.0p1-24.el8
  • openssh-server RHEL 8 8.0p1-24.el8
  • openssh-askpass RHEL 8 8.0p1-24.el8
  • openssh-clients RHEL 8 8.0p1-24.el8
  • pam_ssh_agent_auth RHEL 8 0.10.3-7.24.el8

red hat advisories RHSA-2024:3166

  • openssh AlmaLinux 8 8.0p1-24.el8
  • openssh-cavs AlmaLinux 8 8.0p1-24.el8
  • openssh-ldap AlmaLinux 8 8.0p1-24.el8
  • openssh-keycat AlmaLinux 8 8.0p1-24.el8
  • openssh-server AlmaLinux 8 8.0p1-24.el8
  • openssh-askpass AlmaLinux 8 8.0p1-24.el8
  • openssh-clients AlmaLinux 8 8.0p1-24.el8
  • pam_ssh_agent_auth AlmaLinux 8 0.10.3-7.24.el8

almalinux advisories ALSA-2024:3166

  • openssh Rocky Linux 8 8.0p1-24.el8

rocky linux advisories RLSA-2024:3166

  • openssh Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 8.3_p1-r0

alpine advisories ALPINE-CVE-2020-15778

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-15778 updated cvss 4.1

openssh: scp allows command injection when using backtick characters in the destination argument

  • Red Hat Enterprise Linux 5 openssh Red Hat Enterprise Linux 6 openssh, openssh-ldap, openssh-server, openssh-askpass, openssh-clients, pam_ssh_agent_auth
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 openssh, openssh-cavs, openssh-ldap, openssh-keycat, openssh-server, openssh-askpass, +3 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) openssh-askpass 8.0p1-24.el8 Red Hat Enterprise Linux BaseOS (v. 8) openssh 8.0p1-24.el8, openssh-cavs 8.0p1-24.el8, openssh-ldap 8.0p1-24.el8, openssh-keycat 8.0p1-24.el8, openssh-server 8.0p1-24.el8, openssh-clients 8.0p1-24.el8, +1 more
    fixed: vendor fix RHSA-2024:3166

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 7.8

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

13.68% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/cpandya2909/CVE-2020-15778/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.4 CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • openbsd openssh
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.