CVE-2023-28487· NVD / CVE Program· CNA mitre

Sudo before 1.9.13 does not escape control characters in sudoreplay output.

MediumCVSS 5.3 · v3.1—No exploit Fix available

Pre-auth

Published: Mar 15, 2023
Updated: Jun 17, 2026
EPSS: 1.0% · 60th percentile
CWE: CWE-116

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Action score

Monitor

Low priority for now.

CVSS: 21 / 40 · 5.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.0%

Affected systems

Vendor	Product	CPE
sudo project	sudo	cpe:2.3:a:sudo_project:sudo
netapp	active iq unified manager	cpe:2.3:a:netapp:active_iq_unified_manager

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

netapp active iq unified managerall versions
sudo project sudobefore 1.9.13

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
AlmaLinux:9	sudo	before 1.9.5p2-10.el9_3	1.9.5p2-10.el9_3
AlmaLinux:9	sudo-python-plugin	before 1.9.5p2-10.el9_3	1.9.5p2-10.el9_3
Debian:10	sudo	before 1.8.27-1+deb10u6	1.8.27-1+deb10u6
Debian:11	sudo	before 1.9.5p2-3+deb11u3	1.9.5p2-3+deb11u3
Debian:12	sudo	before 1.9.13p1-1	1.9.13p1-1
Red Hat:enterprise_linux:8::baseos	sudo	before 0:1.9.5p2-1.el8_9	0:1.9.5p2-1.el8_9
Red Hat:enterprise_linux:8::baseos	sudo-debuginfo	before 0:1.9.5p2-1.el8_9	0:1.9.5p2-1.el8_9
Red Hat:enterprise_linux:8::baseos	sudo-debugsource	before 0:1.9.5p2-1.el8_9	0:1.9.5p2-1.el8_9
Red Hat:enterprise_linux:9::appstream	sudo-debuginfo	before 0:1.9.5p2-10.el9_3	0:1.9.5p2-10.el9_3
Red Hat:enterprise_linux:9::appstream	sudo-debugsource	before 0:1.9.5p2-10.el9_3	0:1.9.5p2-10.el9_3
Red Hat:enterprise_linux:9::appstream	sudo-python-plugin	before 0:1.9.5p2-10.el9_3	0:1.9.5p2-10.el9_3
Red Hat:enterprise_linux:9::appstream	sudo-python-plugin-debuginfo	before 0:1.9.5p2-10.el9_3	0:1.9.5p2-10.el9_3
Red Hat:enterprise_linux:9::baseos	sudo	before 0:1.9.5p2-10.el9_3	0:1.9.5p2-10.el9_3
Red Hat:rhel_eus:8.6::baseos	sudo	before 0:1.9.5p2-1.el8_6	0:1.9.5p2-1.el8_6
Red Hat:rhel_eus:8.6::baseos	sudo-debuginfo	before 0:1.9.5p2-1.el8_6	0:1.9.5p2-1.el8_6
Red Hat:rhel_eus:8.6::baseos	sudo-debugsource	before 0:1.9.5p2-1.el8_6	0:1.9.5p2-1.el8_6
Red Hat:rhel_eus:8.8::baseos	sudo	before 0:1.9.5p2-1.el8_8	0:1.9.5p2-1.el8_8
Red Hat:rhel_eus:8.8::baseos	sudo-debuginfo	before 0:1.9.5p2-1.el8_8	0:1.9.5p2-1.el8_8
Red Hat:rhel_eus:8.8::baseos	sudo-debugsource	before 0:1.9.5p2-1.el8_8	0:1.9.5p2-1.el8_8
Red Hat:rhel_eus:9.0::appstream	sudo-debuginfo	before 0:1.9.5p2-7.el9_0.4	0:1.9.5p2-7.el9_0.4
Red Hat:rhel_eus:9.0::appstream	sudo-debugsource	before 0:1.9.5p2-7.el9_0.4	0:1.9.5p2-7.el9_0.4
Red Hat:rhel_eus:9.0::appstream	sudo-python-plugin	before 0:1.9.5p2-7.el9_0.4	0:1.9.5p2-7.el9_0.4
Red Hat:rhel_eus:9.0::appstream	sudo-python-plugin-debuginfo	before 0:1.9.5p2-7.el9_0.4	0:1.9.5p2-7.el9_0.4
Red Hat:rhel_eus:9.0::baseos	sudo	before 0:1.9.5p2-7.el9_0.4	0:1.9.5p2-7.el9_0.4

+11

Same product

sudo project: all records

Other highest-scoring records for the same primary product.

CVE-2021-3156Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root KEV
91Now
CVE-2025-32463Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf from a user-controlled directory is used with the -KEV
79This week
CVE-2019-14287In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, a
54Plan
CVE-2023-22809In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_ED
48Plan
CVE-2019-18634In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo proc
37Monitor
CVE-2025-32462Sudo before 1.9.17p1, when used with a sudoers file that specifies a host that is neither the current host nor ALL, allows listed users to e
36Monitor

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
almalinux:sudo	1.9.5p2-10.el9_3 · AlmaLinux:9	Package registry (OSV)
almalinux:sudo-python-plugin	1.9.5p2-10.el9_3 · AlmaLinux:9	Package registry (OSV)
debian:sudo	1.9.13p1-1 · Debian:12	Package registry (OSV)
opensuse:sudo	1.9.9-150400.4.26.1 · openSUSE:Leap Micro 5.3	Package registry (OSV)
red hat:sudo	0:1.9.5p2-1.el8_6 · Red Hat:rhel_eus:8.6::baseos	Package registry (OSV)
red hat:sudo-debuginfo	0:1.9.5p2-7.el9_0.4 · Red Hat:rhel_eus:9.0::appstream	Package registry (OSV)
red hat:sudo-debugsource	0:1.9.5p2-7.el9_0.4 · Red Hat:rhel_eus:9.0::appstream	Package registry (OSV)
red hat:sudo-python-plugin	0:1.9.5p2-7.el9_0.4 · Red Hat:rhel_eus:9.0::appstream	Package registry (OSV)
red hat:sudo-python-plugin-debuginfo	0:1.9.5p2-7.el9_0.4 · Red Hat:rhel_eus:9.0::appstream	Package registry (OSV)
suse:sudo	1.8.27-4.38.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5	Package registry (OSV)
suse:sudo	1.9.9-150400.4.26.1 · SUSE:Linux Enterprise Micro 5.3	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.

EPSS, last 120 days

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.

sudo-project/sudocommit 334daf9

Credits

All researchers

Finders, 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.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: low · data can be read
Integrity: none
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: Low
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-116 · Improper Encoding or Escaping of Output

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; 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 help

Change log

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records