Medium exploit reference

CVE-2026-102805 — Nothings stb Image Encoding stb_image_write.h stbi_write_tga_core integer overflow

A flaw has been found in Nothings stb up to 1.16. This affects the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The exploit has been published and may be used.

Published Sep 29, 2026 · Updated Oct 16, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (medium)+3
CISA SSVC: exploitation "poc"+5
Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Nothings

Stb

CVSS base

6.5

Medium · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Proof of concept

none · proof-of-concept · active

Automatable

Yes

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Nothings Stb).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Nothings	Stb	version 1.8version 1.16version 1.15version 1.14version 1.13version 1.12version 1.11version 1.10 and 9 more version 1.9version 1.0version 1.7version 1.6version 1.5version 1.4version 1.3version 1.2version 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
6.9	CVSS 4.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
5.5	CVSS 4.0	Medium	—	—	cna@vuldb.com via NIST National Vulnerability Database
6.5	CVSS 3.1	Medium	3.9	2.5	cna@vuldb.com via NIST National Vulnerability Database
6.5	CVSS 3.1	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
6.5	CVSS 3.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
6.4	CVSS 2.0	Medium	10.0	4.9	cna@vuldb.com via NIST National Vulnerability Database
6.4	CVSS 2.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-189

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · nothings/stb
Oct 16, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 16, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 6.5
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 29, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

7 on the record

vuldb.com/vuln/411497/cti
signature, permissions-required, NIST National Vulnerability Database
github.com/nothings/stb/issues/1964
exploit, issue-tracking, NIST National Vulnerability Database
github.com/nothings/stb/
product, NIST National Vulnerability Database
vuldb.com/vuln/411497
vdb-entry, technical-description, NIST National Vulnerability Database
vuldb.com/cve/CVE-2026-102805
third-party-advisory, NIST National Vulnerability Database
github.com/nothings/stb/issues/1964
issue-tracking, NIST National Vulnerability Database
vuldb.com/submit/944868
third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

Nothings
every CVE for this vendor

CWE-189
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-102804 Nothings stb stb_hexwave.h hexwave_init integer overflow 16d
High CVE-2026-5317 Nothings stb stb_vorbis.c start_decoder out-of-bounds write Apr 1, 2026
Medium CVE-2026-5316 Nothings stb stb_vorbis.c setup_free allocation of resources Apr 1, 2026
High CVE-2026-5315 Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of-bounds Apr 1, 2026
High CVE-2026-5314 Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds Apr 1, 2026
Medium CVE-2026-5313 Nothings stb GIF Decoder stb_image.h stbi__gif_load_next denial of service Apr 1, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-102805 is "Nothings stb Image Encoding stb_image_write.h stbi_write_tga_core integer overflow", rated Medium. It affects Stb (Nothings); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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