CVE-2018-20337

Exp

There is a stack-based buffer overflow in the parse_makernote function of dcraw_common.cpp in LibRaw 0.19.1. Crafted input will lead to a denial of service or possibly unspecified other impact.

Published: 2018-12-21 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-20337 is rated High Exploit Risk (79.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.07%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.64% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-20337

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-20337

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.43% 2.07% +1.64%
2 2025-03-30 1.56% 0.43% -1.13%
3 2025-03-29 — 1.56% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-20337

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2018-20337

OS Trackers for CVE-2018-20337

vendor priority summary link
debian not yet assigned CVE-2018-20337 not yet assigned priority: Debian including 1 source packages (libraw), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-20337
redhat medium — https://access.redhat.com/security/cve/CVE-2018-20337
suse low CVE-2018-20337 severity low: SUSE including 93 source package names (LibRaw-0.19.5-1.el8, LibRaw-devel-0.19.5-1.el8, …), 122 product×package rows across 29 product lines (SUSE Liberty Linux 8, SUSE Linux Enterprise Desktop 12 SP3, … (29 product lines)): Fixed 106, Known Not Affected 16. https://www.suse.com/security/cve/CVE-2018-20337/
ubuntu low CVE-2018-20337 low priority: Ubuntu including 8 source packages (darktable, dcraw, …), 152 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 74, DNE 38, needs-triage 22, not-affected 15, released 3. https://ubuntu.com/security/CVE-2018-20337

Affected software / configurations for CVE-2018-20337

Vendor Product Version Raw CPE
libraw libraw 0.19.1 cpe:2.3:a:libraw:libraw:0.19.1:*:*:*:*:*:*:*

References for CVE-2018-20337

cvelogic Threat Intelligence